Science-Backed Insights into Circadian Health
What Is Light Therapy and Is It Right For You?
Light therapy, also called phototherapy or bright light therapy, is a treatment involving exposure to artificial light at controlled wavelengths and time points to treat a variety of medical and non-medical conditions. Most studied for Seasonal Affective Disorder (SAD), circadian rhythm sleep disorders, and other forms of depression, light therapy emulates the beneficial properties of natural sunlight.Light therapy is beneficial for various health conditions, including: Seasonal affective disorder (SAD) Depression and anxiety disorders Sleep disorders, such as insomnia Travel related jetlag Skin conditions, such as psoriasis and eczema Chronic pain, such as fibromyalgia What is light therapy and how does it work? The human body has a natural response to light, which helps regulate our sleep-wake cycle, mood, and overall well-being. Light therapy works by mimicking natural sunlight and stimulating the production of specific hormones and neurotransmitters in the brain. This imitation of sunlight is key in helping to set or reset our body's natural clock, which can improve mood-related issues.One example is the hormone melatonin, which helps regulate our circadian rhythms. Exposure to light, especially blue light, can - in the evening hours and at night - suppress the production of melatonin, in addition to making us more alert and energized. This is why it is often used to treat SAD or other forms of depression.Moreover, light therapy can also affect the production of serotonin, a neurotransmitter responsible for regulating mood (Serotonin is a precursor of Melatonin). Serotonin levels tend to be lower during the winter months when there is less sunlight, leading to symptoms of depression and anxiety. By increasing serotonin levels through light therapy, individuals may experience improved mood and reduced symptoms of depression. Types of Light Therapy There are different types of light therapy, each utilizing a specific wavelength or color of light. The most common types include UV, red, blue, and infrared light therapy. The different types of light therapies work by targeting specific cells or tissues in the body. For example, UV light therapy targets skin cells, while red and infrared light therapies target blood vessels and muscle tissue. UV Light Therapy UV (ultraviolet) light therapy uses ultraviolet rays to treat skin conditions such as psoriasis, vitiligo, and eczema. This type of light therapy works by slowing down the growth of skin cells and reducing inflammation. It is typically administered in a controlled medical setting using special lamps or light boxes. Red Light Therapy Red light therapy, also known as low-level laser therapy (LLLT), uses red or near-infrared light to promote healing and reduce pain and inflammation. It has been found effective in treating skin conditions, such as acne and rosacea, as well as reducing joint pain caused by conditions like arthritis. Red light therapy can be administered through specialized devices or in a clinical setting. Blue Light Therapy Blue light therapy is primarily used to treat circadian related issues (e.g. sleep, energy levels, digestion, etc.) as well as skin conditions such as acne. Circadian effects are elicited by directing light into the eyes, activating melanopsin in the photosensitive retinal ganglion cells responsible for non-image-forming visual functions. Moreover, these functions facilitate hormone secretion, synchronize circadian rhythms, and impact cognitive and affective processes. The skin condition treatment works by killing the bacteria that cause acne and reducing inflammation. This type of light therapy can be administered through special lamps or handheld devices. Infrared Light Therapy Infrared light therapy utilizes infrared rays to penetrate deep into the skin, providing relief for muscle and joint pain. It is also used to promote healing in wounds and injuries. This type is often administered through specialized devices or in a clinical setting. How does light therapy work? Light therapy operates on the principle of photobiomodulation, a process where light exposure stimulates cellular and tissue activity which sets off a series of biochemical reactions. As cells are exposed to light, they absorb photons and convert their energy into a form they can use to carry out vital functions, such as tissue repair and the production of collagen. This therapy has been shown to help support the production of adenosine triphosphate (ATP), the energy currency of the cell, thereby enhancing cellular metabolism and accelerating the healing and regeneration of tissues. In terms of circadian rhythm regulation, light therapy plays a crucial role by influencing the body’s internal biological clocks that dictate our sleep-wake patterns and energy levels. The timing of light exposure is key: morning light therapy can suppress the production of melatonin, the hormone that signals the duration of darkness to our body, and which can help promote alertness during the day. In contrast, dimming lights in the evening can help maintain melatonin levels, supporting the process of synchronization of our bodily rhythms. Additionally, light therapy has been found to increase serotonin production, a neurotransmitter associated with mood and well-being (Serotonin is a biosynthetic precursor of melatonin). This is particularly beneficial during winter months when daylight is limited, helping to alleviate symptoms associated with Seasonal Affective Disorder (SAD). Who is light therapy good for? Individuals with Seasonal Affective Disorder (SAD): Light therapy is a well-established treatment for SAD, a type of depression that occurs at a specific time of year, usually in the winter when daylight hours are shorter. Time of day of light exposure is of utmost importance to help treat SAD, because light at the wrong time of day can worsen SAD. People with Certain Sleep Disorders: Those with circadian rhythm sleep disorders, such as delayed sleep phase disorder, can benefit from light therapy. It helps to adjust their internal body clock to desired (often socially driven) times of wake and sleep. The time of day of light exposure is of utmost importance to help treat circadian rhythm and sleep disorders because light at the wrong time of day can worsen a disorder. Patients with Non-seasonal Depression: Emerging studies suggest that the treatment may also be effective for non-seasonal depression, potentially helping to improve mood and well-being in individuals with major depressive disorder. Time of day of light exposure is of utmost importance to help treat depression, because light at the wrong time of day can worsen a depression. Individuals with Certain Skin Conditions: Conditions like psoriasis, eczema, and vitiligo have been treated with UV light therapy, which can help to slow down cell growth and reduce inflammation. People with Jet Lag or Shift Work Disorder: This treatment can help adjust the body’s internal clock for those who travel frequently across time zones or work irregular hours, improving sleep and alertness. It’s important to note that while the method can be beneficial for these conditions, it should be used under the guidance of a healthcare professional to ensure it is appropriate for the individual’s specific health needs and to manage any potential side effects. To date, there is no off-the-shelf solution and any intervention using light in the context of shift- and night work is advised to be accompanied and supervised by a professional chronobiologist and expert on the non-visual effects of light in humans. Time of day of light exposure is of utmost importance to help treat related disorders, because light at the wrong time of day can worsen a disorder. Risks and side effects While light therapy is generally considered safe, it is not without potential risks and side effects. Awareness and proper management of these can help ensure a safe and effective treatment experience. Potential skin reactions Some individuals may experience skin reactions to light therapy specifically to UV and IR light therapy. Those with sensitive skin or conditions like lupus that can be exacerbated by light are especially prone to reaction. Reactions can include redness, irritation, or rash. UV-light therapy, used for conditions like psoriasis, carries a risk of skin burning similar to sunburn if not correctly monitored. Eye strain or damage: The eyes are particularly sensitive to light. Exposure to intense or prolonged light, especially very strong and unregulated UV blue light, can lead to eye strain. In some cases, without proper eye protection, there is a risk of damage to the retina. It is crucial to use light therapy devices that filter out UV light and to follow guidelines on duration and intensity of exposure. Precautions to take To mitigate risks, several precautions are recommended: Use light therapy devices that comply with safety standards and are recommended by health professionals. Start with shorter sessions and gradually increase duration under professional guidance. If using light therapy for skin conditions, apply sunscreen or other protective barriers as advised by a healthcare provider. Individuals with a history of skin cancer or retinal diseases should consult with a healthcare provider before beginning light therapy. Do not look directly into the light sources. Wear eye protection if recommended, especially for those with pre-existing eye conditions or when using light boxes that emit UV rays. Devices and equipment for light therapy Light boxes UV (ultraviolet) light therapy uses ultraviolet rays to treat skin conditions such as psoriasis, vitiligo, and eczema. This type of light therapy works by slowing down the growth of skin cells and reducing inflammation. It is typically administered in a controlled medical setting using special lamps or light boxes. Dawn simulators Another type of popular light therapy device is a dawn simulator. This device works by gradually increasing the amount of light in a room, mimicking the sunrise. It is commonly used to help regulate ease of waking up . Light therapy wearables Wearable light therapy devices, such as eye masks or glasses, are also becoming more popular, especially as they provide freedom of movement and typically shorter sessions with equivalent effectiveness as light boxes. These devices use LED lights to target specific areas of the body, and can be used for adjustment of internal body clocks, energy levels, minimizing jet lag and improving mental performance. It is advised to precheck whether the device of choice has been subjected to scientific studies to validate its effectiveness. How to choose the right device Identify your needs Determine the primary purpose of the light therapy. Consider consulting a health specialist on this topic. Different conditions require specific types of light therapy, such as bright light for mood disorders. Quality and safety Prioritize devices that are certified for safety and effectiveness. Look for ones that filter out harmful UV rays and have a proven track record of reliability. Size and portability Consider how you will use the device. If you travel frequently, a compact, portable model might be ideal. When crossing time zones during travel, please be aware that time points of light exposure need to be adjusted accordingly. A major contributor to the effectiveness of any light intervention is time of day with respect to the time of our body clocks and not the clocks on walls, on our wrists or our smartphones. For home use, a larger, stationary device could be more suitable. Features Evaluate the features of the device, such as adjustable light intensity, timers, personalized programs and the type of light emitted. These features can enhance the effectiveness and convenience of the therapy. User reviews Research user reviews to gauge the effectiveness and usability of the device. Real-world experiences can provide valuable insights into the device’s performance. Warranty and support A good warranty and responsive customer support are indicators of the manufacturer’s confidence in their product and their commitment to customer satisfaction. They also ensure you have assistance if issues arise. Conclusion Light therapy stands out as a versatile tool in managing various health issues, from mood disorders like SAD to sleep and circadian rhythm disturbances. Its role in syncing our internal clocks and improving overall wellness is significant. However, it’s important to remember that light therapy, while beneficial, is not a one-size-fits-all solution. Each individual’s needs and health conditions are unique. Therefore, consulting with healthcare professionals before embarking on a light therapy journey is crucial. They can provide tailored advice, ensuring that the therapy aligns with your specific health requirements and lifestyle. Alternatively, look for the device that provides personalized advice either via consultancy or software (e.g. App).
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Sleep Do’s and Don’ts: Your Guide to Better Rest
Staring at the ceiling at 2 AM, watching minutes tick by, feeling your anxiety spike with each passing hour. You’re exhausted, but sleep feels impossible. Poor sleep doesn’t just leave you tired, it sabotages your mood, focus, and relationships the next day. The good news? You don’t need expensive gadgets or complicated routines. Simple behavioral changes can transform your sleep quality starting tonight. This guide covers the essential dos and don’ts that work, plus what to do when sleep still won’t come. Did you know? Research shows people go to bed 30-80 minutes later and sleep 20-90 minutes less in the 3-5 days leading up to a full moon, even when they can't see it. The effect is stronger in areas with less artificial light. Essential Sleep Do's Create Consistent Sleep Patterns Your body runs on an internal clock that craves predictability. Going to bed and waking up at the same time every day—yes, even weekends—is the most powerful tool for better sleep. This consistency trains your brain to naturally feel sleepy at bedtime and alert when it’s time to wake up. Weekend sleep-ins might feel good temporarily, but they’re sabotaging your Monday. Sleeping until noon on Saturday throws off your circadian rhythm, making it harder to fall asleep Sunday night. Stick to within an hour of your regular schedule, even on days off. If your current bedtime varies wildly, pick one realistic time you can maintain. Shift gradually by 15-30 minutes earlier each week until you reach your ideal schedule. Your body adapts better to small changes than dramatic overnight shifts. Optimize Your Sleep Environment Temperature is more critical than most people realize. Keep your bedroom between 65-68°F. Your core body temperature naturally drops before sleep, and a cool room supports this biological process. Too warm, and you’ll toss and turn all night. Darkness signals your brain to produce melatonin, the hormone that makes you sleepy. Even small amounts of light from street lamps or electronics can disrupt this process. Blackout curtains or a simple eye mask can make a dramatic difference. Noise doesn’t have to wake you to hurt your sleep quality. Brief sounds throughout the night fragment your sleep cycles, leaving you groggy even after eight hours in bed. If you can’t control outside noise, white noise apps or earplugs create a consistent sound buffer. The Military Sleep Method This technique, developed to help soldiers fall asleep in combat conditions, works for civilians too. Start by completely relaxing your face muscles, including your tongue, jaw, and the muscles around your eyes. Then progressively relax your shoulders, arms, chest, and legs, letting each body part feel heavy and loose. Clear your mind by visualizing one of two scenarios: lying in a canoe on a calm lake under a clear blue sky, or lying in a black velvet hammock in a pitch-dark room. If thoughts intrude, repeat “don’t think” for 10 seconds. With practice, most people can fall asleep within two minutes using this method. Evening Preparation Rituals Start winding down 30-60 minutes before your target bedtime. Your brain needs time to shift from the day’s stress to sleep mode. Effective rituals include: Taking a warm bath or shower Reading something calming (not work-related) Gentle stretching or meditation Listening to soft music or nature sounds One particularly effective technique is the “worry dump.” About two hours before bed, spend 10 minutes writing down tomorrow’s concerns and potential solutions. This clears racing thoughts that typically surface when your head hits the pillow. Did you know? Before color TV, only 15% of people dreamed in color Today, 75% dream in color! People over 55 who grew up with black-and-white television still dream in black and white about 25% of the time. Critical Sleep Don'ts Screen Time and Stimulation Blue light from phones, tablets, and TVs tricks your brain into thinking it’s daytime. This suppresses melatonin production for hours after exposure. The rule is simple: no screens 30-60 minutes before bed. In general, exciting activities before bed are sleep killers. Watching thriller movies, playing competitive video games, or having intense conversations with family members floods your system with adrenaline. Your body needs time to process these stimulating experiences before it can relax into sleep. Your bedroom should have one primary association: sleep. Using your bed for work calls, paying bills, or watching TV confuses your brain’s sleep signals. When you climb into bed, your body should automatically know it’s time to rest, not be productive or entertained. Surprising Sleep Position Mistakes Try avoiding sleeping on your stomach. This position forces you to turn your head to one side for hours, straining your neck muscles and potentially restricting blood flow. Stomach sleeping also flattens the natural curve of your spine and can restrict breathing by pressing your chest into the mattress. Don’t sleep with your pet, no matter how cute they are. Dogs and cats move an average of 20-30 times per night, and each movement can briefly wake you, even if you don’t remember it. These micro-awakenings prevent you from reaching deeper sleep stages, leaving you groggy despite spending adequate time in bed. Substances That Disrupt Sleep Caffeine has a longer half-life than most people realize. That coffee at 3 PM still affects your system at 9 PM. Stop consuming caffeine at least six hours before bedtime. This includes coffee, tea, chocolate, and many sodas. Even small amounts can prevent deep sleep stages. Alcohol might make you feel drowsy initially, but it’s terrible for sleep quality. It fragments your sleep cycles, reduces REM sleep, and often causes middle-of-the-night wake-ups. You’ll feel tired despite spending adequate time in bed. Never take someone else’s sleeping pills or use over-the-counter sleep aids without consulting your doctor. These medications can interact with other drugs, and your body builds tolerance quickly, requiring higher doses for the same effect. Mental Traps to Avoid Watching the clock creates anxiety that keeps you awake longer. That glowing display showing 3:17 AM triggers thoughts like, “I only have four hours left to sleep.” Turn your clock away from view or cover the display entirely. Commanding yourself to sleep backfires every time. The harder you try to force sleep, the more alert your mind becomes. Sleep is a natural process when you stop trying to control it. Did you know? Dolphins and whales literally sleep with half their brain at a time - one hemisphere stays awake to control breathing and watch for danger while the other rests. Each brain half gets about 4 hours of sleep per day. When Sleep Won't Come The 20-Minute Rule Get up if you’re lying in bed awake for more than 20-30 minutes. This might feel counterintuitive when you’re tired, but staying in bed while awake teaches your brain that beds are for worrying, not sleeping. Go to a different room or corner of your bedroom and do something quiet and boring. Read a dull book, do gentle stretches, or practice breathing exercises. Keep lights dim, bright light signals your brain to wake up completely. Only return to bed when you feel sleepy, not just tired. Repeat this process as many times as needed throughout the night. Some people worry this will make them more tired the next day, but lying awake in bed is more disruptive to sleep quality than these brief periods of quiet activity. Blue Light Therapy Solutions For people with persistent sleep timing issues, blue light therapy glasses like AYO can help reset your circadian rhythm. These devices deliver controlled blue light exposure at specific times to shift your natural sleep-wake cycle forward or backward. Morning blue light therapy helps if you’re a natural night owl trying to sleep earlier. Wearing these glasses for 20-30 minutes after waking up signals your brain that it’s daytime, making you feel sleepy earlier that evening. The key is consistent timing, use them at the same time each morning for several weeks. This approach works particularly well for shift workers, travellers dealing with jet lag, or anyone whose natural rhythm doesn’t match their required schedule. Next-Day Recovery After a poor night’s sleep, resist the urge to change your entire routine. Sleeping in late, cancelling activities, or staying in bed will reinforce insomnia patterns. Stick to your planned wake time and daily activities, even when exhausted. Avoid compensating with extra caffeine the next day. While one additional cup might feel necessary, too much caffeine will disrupt the following night’s sleep, creating a vicious cycle. Instead, get natural sunlight exposure and light exercise to help reset your circadian rhythm. Stay active despite fatigue. Light physical activity helps consolidate your sleep drive for the next night. Even a short walk outside provides the bright light exposure and movement your body needs to maintain proper sleep-wake cycles. Your First Night Starts Now Good sleep isn’t about perfection, it’s about consistency with the strategies that work. Focus on the basics first: same bedtime daily, cool dark room, and no screens before bed. Add the advanced techniques gradually as these habits stick. If you’re still struggling after implementing these changes for 2-3 weeks, consider consulting a sleep specialist. Ready to dive deeper into sleep optimization? Check out our blog for more evidence-based strategies on improving your rest and overall wellness.
How to Fix Your Sleep and Cortisol (Science-Based)
You’re lying in bed at 2 AM, mind racing despite being exhausted. Sound familiar? You’re not alone, millions of people are trapped in a vicious cycle where elevated cortisol disrupts sleep, which then triggers even more stress hormone production. This cycle leaves you feeling wired but tired, unable to wind down at night yet struggling to feel alert during the day. Breaking free requires targeting both sides of the equation: managing cortisol levels while optimizing sleep quality. In this guide, you’ll discover practical strategies to reset your stress hormone patterns, create an environment supporting natural cortisol rhythms, and implement proven techniques to help millions regain restorative sleep. Did you know? The Cortisol Awakening Response (CAR) increases cortisol by 50-75% within 30 minutes of waking. Understanding the Sleep-Cortisol Connection Cortisol operates on a 24-hour schedule that’s meant to work in harmony with your sleep cycle. Under normal circumstances, cortisol peaks between 6 and 8 AM to help you wake up naturally, then gradually decreases throughout the day. By midnight, it should reach its lowest point, allowing melatonin to take over and guide you into deep sleep. This delicate balance happens through your hypothalamic-pituitary-adrenal (HPA) axis, a communication network between your brain and adrenal glands. When functioning correctly, this system ensures you feel alert during the day and sleepy at night. The problem starts when chronic stress throws this system off balance. Elevated cortisol at the wrong times suppresses melatonin production and reduces adenosine, the brain chemical that creates sleep pressure. Instead of feeling drowsy at bedtime, you feel wired and alert. What makes this particularly frustrating is the bidirectional relationship between sleep and cortisol. Poor sleep triggers more cortisol production the next day as your body tries to cope with the stress of sleep deprivation. This creates a self-perpetuating cycle where each sleepless night makes the next one more likely. Signs Your Cortisol is Disrupting Your Sleep Recognizing cortisol-related sleep disruption isn’t always obvious since symptoms can mimic other sleep disorders. Here are the telltale signs that stress hormones are disturbing your rest: Sleep Pattern Disruptions: Difficulty falling asleep despite feeling physically tired Waking up between 1 and 4 AM and struggling to fall back asleep Early morning awakenings with racing thoughts or anxiety Feeling alert and “wired” at bedtime when you should feel drowsy Physical Symptoms: Night sweats without an apparent cause Heart palpitations or increased heart rate at night Muscle tension that prevents relaxation Frequent urination during sleep hours Daytime Warning Signs: Morning anxiety or feeling overwhelmed upon waking Afternoon energy crashes followed by evening alertness Difficulty concentrating or memory problems Increased appetite, especially for sugary or high-carb foods Emotional Indicators: Mood swings or increased irritability Feeling overwhelmed by everyday stressors Depression or anxiety symptoms that worsen with poor sleep If you regularly experience three or more of these symptoms, elevated cortisol is likely contributing to your sleep problems. The pattern often intensifies during stressful life periods, such as job changes, relationship issues, or health concerns. Did you know? Twin studies show the cortisol awakening response pattern is largely genetically determined with a heritability of 0.40-0.48. Science-Based Solutions to Fix Your Sleep and Cortisol Solution 1: Morning Habits That Set You Up for Better Sleep How you start your day directly impacts your cortisol rhythm and sleep quality 16 hours later. The proper morning habits reinforce your body’s natural hormone patterns, making it easier to wind down at night: Light Exposure Timing: Get bright light within 30 minutes of waking, ideally from natural sunlight. This exposure helps calibrate your circadian rhythm and ensures cortisol peaks at the right time. Spend 10-15 minutes outside or near a bright window. On cloudy days, consider a light therapy device to maintain consistency. Exercise for Optimal Hormone Balance: Morning workouts work with your natural cortisol peak rather than against it. Since cortisol is elevated to help you wake up, exercise during this window enhances the hormone’s beneficial effects without disrupting evening sleep. Even a 15-minute walk can help regulate your daily cortisol pattern. Strategic Nutrition Choices: Start with a protein-rich breakfast to stabilize blood sugar and prevent daily cortisol spikes. Greek yogurt with nuts, eggs with vegetables, or a protein smoothie help maintain steady energy without the afternoon crashes that disrupt sleep. Consistent Wake Times: Wake up at the same time every day, even on weekends. This consistency strengthens your circadian rhythm and helps your HPA axis anticipate when to release cortisol. Many people notice improved sleep within just one week of maintaining a consistent wake time. Morning Stress Management: Start your day with 5 minutes of deep breathing or light meditation before checking your phone. This prevents the immediate cortisol spike from diving into emails, news, or social media first thing in the morning. Solution 2: Light Therapy Glasses Light therapy represents one of the most precise ways to influence your cortisol rhythm, and wearable light therapy glasses offer a convenient, targeted approach that fits into busy lifestyles: How Light Therapy Influences Cortisol: Specific wavelengths of light directly communicate with your hypothalamus, the control center for cortisol production. Blue light exposure in the morning signals your HPA axis to release cortisol at optimal levels, while avoiding blue light in the evening allows cortisol to naturally decline. This targeted approach is more effective than hoping for adequate sunlight exposure, especially during winter months or for people who work indoors. AYO Light Therapy Glasses: AYO glasses deliver precisely calibrated blue light that mimics natural sunlight’s effects on circadian rhythms. Unlike traditional light boxes that require you to sit stationary, these wearable glasses allow you to maintain your morning routine while receiving therapeutic light exposure. Optimal Usage for Sleep Improvement: Use light therapy glasses immediately upon waking or within the first 30 minutes of your day. This timing reinforces your natural cortisol awakening response and helps establish a clear distinction between day and night hormones. Real-World Results: Many users report falling asleep faster and experiencing fewer middle-of-the-night awakenings within the first week of consistent use. Solution 3: Stress Management Techniques That Actually Work Managing daily stress is essential for maintaining healthy cortisol levels, but not all stress-reduction techniques are created equal. Focus on evidence-based methods that directly impact your HPA axis: Deep Breathing for Immediate Cortisol Reduction: The 4-7-8 breathing technique can lower cortisol within minutes. Inhale for four counts, hold for 7, exhale for 8. This activates your parasympathetic nervous system and signals your adrenals to reduce cortisol production. Use this technique when you feel stress building or as part of your bedtime routine. Progressive Muscle Relaxation: Systematically tense and release muscle groups from your toes to your head. This practice reduces physical tension and interrupts the stress-cortisol feedback loop. Many people find that 10 minutes of progressive muscle relaxation before bed significantly improves their ability to fall asleep. Cognitive Techniques for Racing Thoughts: The “worry window” technique involves setting aside 15 minutes daily to think about stressors deliberately and then mentally “closing” that window. When worries arise outside this time, remind yourself to address them during tomorrow’s worry window. This prevents chronic rumination that keeps cortisol elevated throughout the day. Mindfulness Without the Time Commitment: You don’t need hour-long meditation sessions. Mindful activities like washing dishes, walking, or eating can reduce cortisol by focusing entirely on the present moment rather than multitasking or planning. Did you know? Sleep quality, not sleep quantity, affects cortisol responses to stress - it's not just about the hours you clock, but how well you actually sleep. When to Seek Professional Help While lifestyle changes effectively address most cortisol-related sleep issues, specific symptoms indicate the need for medical evaluation and professional intervention. Here are some of the biggest red flags when it comes to excessive cortisol levels: Sleep problems persist despite 4-6 weeks of consistent lifestyle changes Severe anxiety or panic attacks upon waking Unexplained weight gain, especially around the midsection and upper back Purple stretch marks, easy bruising, or muscle weakness Blood pressure changes or irregular heart rhythms Depression that worsens with sleep disruption Your healthcare provider may recommend cortisol testing through saliva, blood or 24-hour urine collection. Salivary cortisol tests are often preferred because they measure “free” cortisol, the active form that affects your body. These tests typically measure cortisol at four points throughout the day to assess your natural rhythm. Medical professionals can address underlying conditions contributing to cortisol dysregulation. This might include thyroid disorders, sleep apnea, or hormonal imbalances that require targeted treatment beyond lifestyle modifications. Breaking Free From the Cycle Fixing cortisol-disrupted sleep isn’t about perfection, it’s about consistency. Focus on one or two changes at a time, whether establishing a consistent wake time, creating evening boundaries with technology, or incorporating targeted light therapy with tools like AYO glasses. Investing in better sleep pays dividends in every area of your life: clearer thinking, stable moods, and the energy to handle daily stresses without triggering the cortisol-sleep disruption cycle. Want to learn more about your sleep and how to optimize it? Visit our blog for more science-backed strategies, detailed guides, and the latest research on achieving restorative rest.
Why Can’t I Sleep Even Though I’m Tired? [Expert Guide]
There’s nothing more frustrating than lying in bed, utterly exhausted from a long day, yet finding yourself wide awake staring at the ceiling. Your body feels fatigued, your eyelids drooping, but your mind refuses to shut off. The good news is that this frustrating phenomenon has identifiable causes and proven solutions. Your sleeplessness isn’t random, it’s likely the result of specific lifestyle habits, timing issues, or environmental factors that are entirely within your control to change. In this guide, we’ll explore the science behind why you can’t fall asleep even though you’re tired, identify the most common culprits keeping you awake, and provide actionable strategies you can implement tonight to get the rest you desperately need finally. Did you know? If it takes you less than five minutes to fall asleep at night, you're probably sleep-deprived. Ideally, falling asleep should take 10 to 15 minutes. The Science Behind Tired vs. Sleepy Understanding why you feel tired but can’t sleep starts with recognizing that “tired” and “sleepy” aren’t the same. When you feel tired, you’re experiencing physical and mental fatigue, low energy, difficulty concentrating, and that heavy, worn-out sensation. However, tiredness doesn’t automatically trigger sleep. Sleepiness, on the other hand, is your body’s biological readiness to fall asleep. It is characterized by drooping eyelids, yawning, and an irresistible urge to close your eyes. Two key biological processes control whether you can actually fall asleep or not: Sleep Pressure: Think of sleep pressure as your body’s sleep fuel tank. Every minute you’re awake, a chemical called adenosine builds up in your brain, creating mounting pressure to sleep. The longer you stay awake, the stronger this pressure becomes. However, caffeine blocks adenosine receptors, so coffee can make you feel alert even when you’re physically exhausted. Circadian Rhythm: Your internal body clock runs on a roughly 24-hour cycle, controlling when your body produces sleep-promoting hormones like melatonin. This rhythm determines your natural sleep and wake windows. Even with high sleep pressure, if your circadian rhythm isn’t primed for sleep, you’ll struggle to drift off due to irregular bedtimes, light exposure, or other factors. The problem happens when these systems are out of sync. You might have accumulated enough sleep pressure to feel tired, but if your circadian rhythm is disrupted, your body won’t receive the biological signals needed to initiate sleep. This creates the frustrating experience of exhaustion without sleepiness. For example, if you usually go to bed at 11 PM but try sleeping at 9 PM after a particularly draining day, you might feel tired but won’t be able to fall asleep because your circadian rhythm hasn’t yet triggered melatonin production for your usual bedtime. Common Lifestyle Culprits These seemingly innocent lifestyle choices are often the hidden culprits behind your nighttime wakefulness. Irregular Sleep Schedule: Going to bed at 10 PM on weekdays but staying up past midnight on weekends might seem harmless, but it wreaks havoc on your circadian rhythm. Your body clock thrives on consistency and struggles when you constantly change your sleep times. This irregularity sends mixed signals about when to produce sleep hormones, leaving you tired during the day but alert at your intended bedtime. Late Caffeine Consumption: That afternoon coffee might seem innocent, but caffeine has a half-life of 5-7 hours, meaning it can linger in your system for over 12 hours. A 3 PM latte could still affect your ability to fall asleep at 10 PM, even if you don’t feel actively stimulated. Evening Alcohol: While alcohol might make you feel drowsy initially, it severely disrupts sleep quality. Alcohol fragments your sleep, causing frequent awakenings throughout the night. It also suppresses melatonin production and can trigger anxiety as it metabolizes, leaving you tired but wired. Large Evening Meals: Eating a substantial dinner close to bedtime forces your body to focus on digestion when it should be winding down. This can delay your circadian rhythm and cause physical discomfort like bloating, acid reflux, or indigestion that prevents relaxation. Screen Time and Blue Light: Your devices emit blue light, which disrupts your circadian rhythm. This light suppresses melatonin production and can shift your body clock later, making you feel alert when you should be sleepy. Did you know? Caffeine has a highly variable half-life ranging from 2 to 12 hours depending on individual factors like genetics and smoking status. Timing and Biological Factors Your body operates on precise biological timing, and even minor disruptions to these natural rhythms can leave you exhausted but unable to sleep. Missing Your Melatonin Window Every evening, there’s a roughly one-hour window when your body is naturally primed for sleep. During this time, melatonin production peaks, your core body temperature drops, and your brain shifts into sleep mode. If you miss this window by going to bed too late, you might find yourself lying awake for hours. Conversely, trying to sleep too early, before your melatonin window opens, can leave you feeling tired but not sleepy. Your body isn’t biologically ready for sleep, regardless of how exhausted you feel. This window typically occurs at the same time each night when you maintain a consistent schedule, but it shifts with irregular bedtimes or lifestyle disruptions. Poor Napping Strategy Strategic napping can boost energy, but poorly timed naps sabotage nighttime sleep. Napping too late in the day or for too long reduces sleep pressure, the biological drive to sleep that builds throughout waking hours. If you nap after 3 PM or sleep for over 90 minutes, you might not accumulate enough sleep pressure to fall asleep at your regular bedtime. This creates a cycle where poor nighttime sleep leads to excessive daytime napping, further disrupting your sleep schedule. Hormonal Fluctuations Hormones significantly impact sleep timing and quality, often in ways you can’t directly control. Women experience monthly fluctuations in estrogen and progesterone that affect sleep patterns, particularly in the week before menstruation when progesterone drops sharply. Perimenopause and menopause bring additional challenges, with declining estrogen levels causing hot flashes, night sweats, and temperature regulation issues that disrupt sleep. Stress hormones like cortisol can also remain elevated in the evening, keeping you alert when you should be winding down. Temperature Regulation Problems Your core body temperature naturally drops 1-2 degrees before sleep onset, signaling to your brain that it’s time to rest. However, a warm bedroom, heavy pajamas, or poor thermostat settings can prevent this temperature drop. Many people don’t realize that feeling too warm, even slightly, can completely block their ability to fall asleep, regardless of how tired they feel. Your bedroom should be between 65-68°F for optimal sleep, which feels cooler than most expect. Seasonal and Light Exposure Issues The circadian rhythm relies heavily on light cues to stay synchronized. Insufficient morning light exposure or too much artificial light in the evening can shift your internal clock, making you feel tired at the wrong times. During winter months or if you work all day indoors, you might not get enough bright light to maintain a strong circadian rhythm, leading to feeling tired throughout the day but not sleepy at bedtime. Psychological and Environmental Barriers Your mental state and sleep environment are crucial to your ability to fall asleep. Stress and the "Wired But Tired" State Stress creates a particularly frustrating sleep scenario where your body feels exhausted but your mind remains hyperactive. When you’re stressed, your body produces elevated levels of cortisol, the primary stress hormone that keeps you in fight-or-flight mode. This hormonal state creates physical alertness even when mentally and physically drained. Your heart rate stays elevated, your muscles remain tense, and your brain continues scanning for threats, making it nearly impossible to relax into sleep. Racing Thoughts and Rumination Without daytime distractions, your mind starts processing unfinished business: tomorrow’s presentation, relationship concerns, financial worries, or that awkward conversation from earlier. This rumination cycle keeps your brain active when it should be winding down. Once you start worrying about one thing, it often cascades into multiple concerns, creating a mental spiral lasting for hours. Bedroom Environment Issues Your sleep environment might work against you in ways you haven’t considered. Beyond obvious factors like noise and light, several environmental elements can prevent sleep. Room temperature above 68°F prevents the natural body temperature drop needed for sleep onset. Even feeling slightly warm can block your ability to fall asleep. Poor air quality from dust, allergens, or inadequate ventilation can cause congestion, coughing, or general discomfort that keeps you awake. An uncomfortable mattress or pillow might not cause obvious pain but can create subtle discomfort that prevents deep relaxation. Physical Discomfort and Pain Any physical discomfort, whether acute or chronic, can override tiredness and prevent sleep. This includes obvious issues like back pain or headaches, but also subtler problems like restless legs, muscle tension, or digestive discomfort from eating too late. Sometimes the discomfort isn’t apparent until you lie down and try to relax. The tension you’ve been carrying all day becomes noticeable when you finally stop moving and attempt to rest. Anxiety About Sleep Itself Ironically, worrying about being unable to sleep often becomes a self-fulfilling prophecy. Performance anxiety around sleep, especially after experiencing several poor nights, can create a mental association between your bed and stress rather than rest.This anticipatory anxiety can begin hours before bedtime, with thoughts like “I hope I can sleep tonight” or “What if I’m tired tomorrow?” These worries activate your stress response, making it even harder to achieve the calm state necessary for sleep. Medical and Sleep Disorder Considerations Sometimes the inability to sleep despite exhaustion stems from underlying medical conditions or sleep disorders that require professional attention. Insomnia and Sleep Disorders Chronic insomnia affects about 10% of adults and involves persistent difficulty falling asleep, staying asleep, or waking too early at least three nights per week for three months or longer. If you regularly experience the tired-but-can’t-sleep pattern, you might have one of several insomnia types: Sleep-onset insomnia makes it difficult to fall asleep initially, often taking an hour or more despite feeling exhausted. Maintenance insomnia causes frequent nighttime awakenings and difficulty returning to sleep. Early morning awakenings involve waking 2-3 hours before your intended time and being unable to fall back asleep. Delayed Sleep-Wake Phase Disorder affects about 1% of adults, causing your natural sleep time to be significantly later than conventional schedules. You might feel wide awake until 2-4 AM, regardless of how tired you are earlier. Restless Leg Syndrome causes uncomfortable sensations in your legs and an irresistible urge to move them. It typically worsens in the evening when you’re trying to relax. Sleep apnea causes repeated breathing interruptions during sleep, leading to frequent awakenings and elevated stress hormones that can keep you alert even when exhausted. Underlying Health Conditions Mental health conditions like depression, anxiety, and ADHD significantly impact sleep patterns. Depression often causes early morning awakening, while anxiety typically makes it difficult to fall asleep initially. Thyroid disorders, particularly hyperthyroidism, can cause physical exhaustion while keeping your nervous system overstimulated. Chronic pain conditions create a cycle where poor sleep worsens pain, and increased pain makes sleep more difficult. Blood sugar fluctuations from diabetes or insulin resistance can cause nighttime awakenings or difficulty falling asleep. Medication Side Effects Many common medications can interfere with sleep timing and quality, even when taken hours before bedtime. Antidepressants, particularly SSRIs, can suppress REM sleep and cause restlessness. Blood pressure medications might affect your natural circadian rhythm as well. Steroids and some allergy medications can have stimulating effects that last longer than expected. Even over-the-counter medications like decongestants or pain relievers containing caffeine can disrupt sleep patterns. When to Seek Professional Help Consider consulting a healthcare provider or sleep specialist if you experience: Persistent sleep difficulties lasting more than a month despite good sleep hygiene Excessive daytime fatigue that interferes with work or relationships Loud snoring, gasping, or breathing pauses during sleep (signs of sleep apnea) Uncomfortable leg sensations that worsen in the evening Sleep problems that coincide with other health changes or new medications Did you know? 87% of people go to bed at least two hours later on weekends, creating "social jet lag." Proven Solutions to Fall Asleep Tonight When you’re lying in bed exhausted but unable to sleep, you need strategies that work immediately and others to prevent future sleepless nights. Here are the most effective approaches backed by sleep science. The 20-Minute Rule If you haven’t fallen asleep within 20 minutes, get out of bed and do a quiet, relaxing activity in dim lighting. This prevents your brain from associating your bed with wakefulness and reduces the anxiety that builds when you lie awake, frustrated. Try reading a book (not on a screen), gentle stretching, folding laundry, or journaling. Return to bed only when you feel genuinely sleepy. Breathing and Relaxation Techniques Diaphragmatic breathing activates your parasympathetic nervous system, naturally calming your body for sleep. Place one hand on your chest and one on your belly. Breathe slowly so that your belly hand rises more than your chest hand. Progressive muscle relaxation involves tensing and releasing muscle groups from your toes to your head. Tense each muscle group for 5 seconds, then release and notice the contrast between tension and relaxation. Optimal Sleep Environment Set your thermostat between 65-68°F—cooler than most expect but essential for the natural body temperature drop that triggers sleep. Eliminate light sources including LED clocks, phone chargers, and streetlight coming through windows. Even small amounts of light can suppress melatonin production. Use blackout curtains or an eye mask if necessary. Address noise with earplugs, a white noise machine, or a fan. Consistent background noise masks disruptive sounds that might wake you. Long-Term Sleep Optimization Strategies Master Your Light Exposure: Light is the most powerful regulator of your circadian rhythm. Get at least 10-15 minutes of bright natural light within an hour of waking, preferably outdoors. This resets your internal clock and promotes alertness during the day while ensuring sleepiness at the right time.For those struggling with seasonal changes, shift work, or insufficient natural light exposure, light therapy can be transformative. The AYO light therapy glasses provide targeted blue light exposure that helps regulate your circadian rhythm without requiring you to sit in front of a traditional light box.These wearable devices deliver clinically effective light doses while allowing you to move freely during your morning routine. Strategic Caffeine and Meal Timing: Stop consuming caffeine at least 12 hours before bedtime. For a 10 PM bedtime, this means no coffee, tea, chocolate, or energy drinks after 10 AM. Establish Non-Negotiable Sleep Schedule: Go to bed and wake up at the same time every day, including weekends. This consistency strengthens your circadian rhythm and makes falling asleep much easier over time. Address Stress and Anxiety: Develop healthy stress management techniques for use during the day, not just at bedtime. Regular exercise (but not within 4 hours of sleep), meditation, or talking with a therapist can reduce the overall stress load that interferes with sleep. Smart Napping Strategy: If you must nap, do it before 3 PM and limit it to 20-30 minutes. This brief rest can restore energy without reducing nighttime sleep pressure. Longer or later naps will make it harder to fall asleep at bedtime. Track and Adjust: Keep a simple sleep log noting bedtime, wake time, how long it took to fall asleep, and how you felt the next day. This helps identify patterns and which strategies work best for your unique situation. Break the Cycle Tonight Feeling tired but unable to sleep is frustrating, but it’s not a permanent sentence. Whether it’s poor caffeine timing, irregular sleep schedules, stress keeping you wired, or missing your natural melatonin window, most causes have straightforward solutions. Ready to dive deeper into better sleep? Visit our blog for more evidence-based sleep strategies and expert insights.
The Ultimate Guide to Natural Sleep Aids
Over 70 million Americans struggle with sleep disorders, yet most natural sleep aids on store shelves don’t work. The problem gets worse when you discover the overwhelming world of natural sleep aids. Store shelves overflow with bottles promising better sleep, each claiming to be the miracle cure you’ve been seeking. But here’s the truth: most of these expensive supplements are poorly regulated and inconsistently effective. This guide reveals the science-backed natural sleep aids that work, from free behavioral changes that reset your internal clock to the few supplements worth your money. Did you know? Women are 40% more likely to have insomnia than men. What Are Natural Sleep Aids? Natural sleep aids are non-prescription methods and substances that help you fall asleep faster and sleep more soundly. Unlike prescription sleep medications, these approaches work with your body’s natural processes rather than forcing artificial sedation. Natural sleep aids fall into three main categories: Behavioral interventions – Sleep hygiene practices, light exposure timing, and lifestyle changes Plant-based supplements – Herbal remedies like valerian root, chamomile, and passionflower Naturally occurring compounds – Melatonin, magnesium, and amino acids like L-theanine People want alternatives to prescription sleep drugs that can cause dependency, morning grogginess, and serious side effects. Natural sleep aids promise gentler solutions that work with your biology instead of against it. The biggest problem is that the word “natural” doesn’t guarantee safety or effectiveness. The FDA doesn’t regulate most sleep supplements like it regulates medications. This means you can’t be sure what’s in that bottle or whether it works as advertised. The good news? The most powerful natural sleep aids cost nothing and have mostly no side effects. These behavioral strategies address the root causes of sleep problems rather than masking symptoms with pills. The Most Effective Natural Sleep Aids Some of the most potent natural sleep aids don’t require a prescription or a purchase, they’re behavioral strategies that work with your body’s built-in sleep systems. Sleep Hygiene Practices Your daily habits directly impact your sleep quality. Small changes create big improvements in how quickly you fall asleep and how well you stay asleep. Maintain a consistent sleep schedule: Go to bed and wake up at the same time every day, even on weekends. Your circadian rhythm thrives on predictability. When you constantly shift your sleep times, you confuse your internal clock, making it harder to fall asleep naturally. Create an optimal bedroom environment: Keep your room between 65-68°F, as dark as possible, and quiet. Your body temperature naturally drops as you prepare for sleep, so a cool room supports this process. Invest in blackout curtains, an eye mask, or earplugs if needed. Develop a pre-sleep routine: Start winding down 30-60 minutes before bed. This might include reading, gentle stretching, or listening to calming music. Avoid screens during this time, as the blue light interferes with melatonin production. Light Management & Circadian Rhythm Reset Your circadian rhythm controls when you feel alert and when you feel sleepy. This internal 24-hour clock responds primarily to light exposure, making light management one of the most powerful natural sleep aids available. Understanding your internal body clock: Your circadian rhythm evolved over millions of years to sync with the sun’s cycle. When this rhythm gets disrupted by irregular light exposure, shift work, or screen time before bed, your sleep suffers dramatically. Common signs of circadian disruption include difficulty falling asleep, waking up frequently during the night, and feeling groggy during the day despite getting enough hours in bed. Get morning light exposure: Step outside within the first hour of waking for 10-20 minutes, or sit by a large window. This morning light signals your brain to stop producing melatonin and start your daily energy cycle. AYO light therapy glasses: The most effective circadian reset tool. These glasses deliver precisely calibrated blue light that resets your circadian rhythm more effectively than any other method. Unlike expensive light boxes that require you to sit stationary, AYO glasses let you move around while getting therapeutic light. Minimize evening light exposure: Dim lights 2-3 hours before bed and use blue light blocking glasses if you must use screens. Your brain interprets bright light as a signal to stay awake, so reducing evening light allows natural melatonin production to begin. Lifestyle Adjustments Simple changes to your daily routine can dramatically improve your sleep quality without any supplements or medications. Exercise regularly, but time it right. Physical activity during the day makes it easier to fall asleep at night. However, avoid intense workouts within 3 hours of bedtime, as exercise raises your body temperature and can keep you wired. Watch your caffeine timing. Stop consuming caffeine at least 10 hours before bed. Caffeine blocks adenosine, a chemical that builds up during the day and makes you tired. Even if you don’t feel jittery, afternoon caffeine can interfere with deep sleep. Manage your dinner timing. Eat your last large meal at least 3 hours before bed. Your body needs time to digest food, and lying down with a full stomach can cause discomfort and acid reflux that disrupts sleep. Limit alcohol consumption. While alcohol might make you feel drowsy initially, it fragments your sleep later in the night. Alcohol suppresses REM sleep and causes you to wake up multiple times, even if you don’t remember it. Try the warm bath trick. A hot bath or shower 90 minutes before bed can help you fall asleep faster. The heat causes blood vessels near your skin to dilate, and when you step out, your body temperature drops rapidly, mimicking the natural temperature drop that signals bedtime. Did you know? If it takes you less than five minutes to fall asleep at night, you're probably sleep-deprived. Ideally, falling asleep should take 10 to 15 minutes.2 to 12 hours Natural Sleep Aid Supplements That Actually Work While behavioral changes are the most effective natural sleep aids, certain supplements can provide additional support when used correctly. Unlike most sleep supplements, these have solid research backing their effectiveness. Melatonin Melatonin is your body’s natural sleep hormone, produced by the pineal gland when darkness falls. Supplementing with melatonin can help reset your sleep cycle and reduce the time it takes to fall asleep. Melatonin doesn’t knock you out like a sleeping pill. Instead, it signals to your brain that it’s time to prepare for sleep. Think of it as a gentle nudge toward drowsiness rather than forced sedation. Less is more with melatonin. Most people need only 0.5-3mg taken 30-60 minutes before bedtime. The 10mg tablets you see in stores are unnecessarily high and can actually make you feel groggy the next day. Melatonin works best for jet lag, shift work, or temporarily resetting your sleep schedule. It’s less effective for staying asleep once you’ve drifted off. Magnesium Magnesium deficiency affects nearly 50% of adults and can directly impact sleep quality. This mineral helps activate the parasympathetic nervous system, which promotes relaxation and prepares your body for rest. Magnesium glycinate and magnesium citrate are the most bioavailable forms. Avoid magnesium oxide, which is poorly absorbed and can cause digestive upset. Take 200-400mg about an hour before bed. Start with the lower dose and increase gradually if needed. Too much magnesium can cause loose stools, so find your personal tolerance level. Other Evidence-Based Natural Sleep Aids Chamomile: Available as tea or extract, chamomile contains apigenin, which binds to brain receptors that promote sleepiness. Drink chamomile tea 30 minutes before bed or take 400mg of standardized extract. Important Note: Those are general suggestions based on research, not medical advice. Always consult with your healthcare provider. Red Flags When Shopping Avoid products that promise “instant” results. Quality natural sleep aids work gradually by supporting your body’s natural processes. Anything claiming immediate knockout effects is likely ineffective or contains undisclosed synthetic ingredients. Skip products with dozens of ingredients. More ingredients don’t mean better results. They usually mean higher prices and increased chances of dangerous interactions or side effects. Don’t trust “miracle cure” marketing language. Terms like “breakthrough formula” or “doctor’s secret” are red flags. Legitimate natural sleep aids have straightforward, science-based explanations for how they work. Be wary of products sold exclusively through late-night infomercials or suspicious websites. Reputable natural sleep aids with transparent ingredient lists are available through established retailers. Your Path to Better Sleep Starts Tonight The most effective natural sleep aids aren’t found in expensive bottles, they’re simple behavioral changes you can implement immediately. Before turning to supplements, focus on consistent sleep schedules, strategic light exposure with tools like AYO light therapy glasses, and basic lifestyle adjustments. Want more evidence-based sleep strategies and health tips? Visit our blog for the latest research on optimizing your rest and energy naturally.
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How Does the Circadian Rhythm Affect Our Sleep Patterns?
The circadian rhythm affects our sleep patterns in various ways. When our body’s internal clock is functioning properly, we experience increased alertness during the day and a natural feeling of sleepiness at night. This results in a healthy and consistent sleep pattern that allows us to wake up feeling rested and refreshed in the morning. However, disruptions to our circadian rhythm can lead to various sleep problems, such as insomnia or excessive daytime sleepiness. What Happens When the Circadian Rhythm Is Disrupted? Our circadian rhythm can face disruptions from factors like jet lag, shift work, or irregular sleep schedules. When this happens, our body’s internal clock is thrown off balance, and our natural sleep-wake cycles are disrupted. For instance, one may not be able to sleep at night. This can result in having fewer hours of sleep and sleep during the day. How Can Disruptions to the Circadian Rhythm Affect Our Sleep? Cortisol and Sleep: Cortisol, which is a glucocorticoid hormone that your adrenal glands produce and release, usually decreases in the evening and thereby helps promote sleep. However, disruptions, like stress or excessive device use emitting blue light, can interfere with this natural decline. Stress and Cortisol: The experience of stress is accompanied by changes in the body’s cortisol profile. In the evening, a stress-experience-related increase in cortisol can interfere with the usual drop in cortisol at that time of day, which is needed for good sleep. People dealing with chronic stress may find it hard to fall asleep, leading to insomnia. Electronic Devices and Sleep Disruption: Using electronic devices, especially close to sleep onset, can disturb our sleep and the body’s internal biological clock. Increased levels of alertness depending on the media content consumed can interfere with a consistent sleep time. Engaging with stimulating content can make it tough for the body to shift into a sleep-friendly state. And also the bright light from screens can suppress melatonin. Insomnia as a Result: When disruptions like circadian rhythm imbalance, high cortisol levels, and electronic device impact add up, it can contribute to insomnia. Insomnia, characterized by ongoing difficulty falling or staying asleep, can become a lasting issue if these disruptions persist.