Key Takeaways
You just landed after a 10-hour flight. You're exhausted but weirdly wired, your stomach is off, and the thought of doing anything productive feels laughable.
That's jet lag, and it's not just tiredness. It's your entire internal clock fighting the reality of where you are.
For most people, the first day or two of a trip (or the return home) gets swallowed by it.
Here's the thing: you can't eliminate jet lag, but you can significantly shorten it. These eight tips are grounded in how your body actually works, and most of them you can start using before you even board.
1. Reset Your Clock the Moment You Land
The instinct when you land is to keep half your brain on home time.
You calculate what time it is back where you came from, text people according to their schedules, and think, "Well, it's only 9 pm at home, so that I can stay up a little longer."
The problem with that logic is that your body takes cues from your behavior. When you eat, when you sleep, when you expose yourself to light, all of these signal to your internal clock what time it actually is.
If you keep acting on home time, your clock keeps running on home time.
So the moment you land, flip everything. Set your watch. Eat when locals eat. If it's midday at your destination, treat it like midday, even if your gut says otherwise.
It’ll be uncomfortable for a few hours, but your body adapts much faster when you commit fully to the new schedule instead of straddling two time zones at once.
2. Use Light Therapy Glasses to Hack Your Circadian Rhythm
Light is the most powerful tool you have for beating jet lag, and most travelers completely underestimate it.
Your circadian rhythm is largely controlled by light exposure. When your eyes detect bright light, especially in the blue-light spectrum, your brain suppresses melatonin and signals that it's time to be awake. Take that away, and your body starts winding down.
The most effective way to do this is with light therapy glasses. You put them on for 20–30 minutes, drinking coffee, scrolling your phone, reading, and they work in the background, pushing your internal clock in the direction you need.
Why glasses over just going outside? A few reasons. The weather is unpredictable. You might land somewhere overcast, or during winter when morning light is weak.
Hotels and airports are notoriously dim. And for eastbound travel,l especially, timing your light exposure matters.
Speaking of timing: direction matters a lot here.
- Traveling east (say, New York to Paris): You need to wake up earlier than your body wants to. Use light therapy in the early morning, right when you wake up at your destination. This pushes your clock forward.
- For the first day, avoid bright light in the evening, as it'll push your rhythm in the wrong direction.
- Traveling west (say, London to Los Angeles): You need to stay up later. Use light exposure in the late afternoon and evening to delay your clock. Morning light isn't your friend here.
If you don't have light therapy glasses yet, getting outside in sunlight at the right time of day is the next best thing.
3. Sleep Smart, Not Just More
More sleep isn't always the answer.
One of the most common jet lag mistakes is napping the moment you get to your hotel because you're exhausted. It feels like the right call, but a two-hour nap at 3 pm in your destination's time zone can spiral your ability to sleep that night, which means another day of feeling off.
If you absolutely have to nap (and sometimes you do), keep it to 20 minutes maximum.
You can also figure out what time it'll be when you land, and work backward. If you're landing at 7 am, you want to be reasonably awake and functional, so sleeping on the flight makes sense.
If you're landing at 8 pm local time and need to stay up a few more hours before bed, sleeping the whole flight might leave you staring at the ceiling all night.
4. What You Drink Matters More Than You Think
Airplane cabins are brutally dehydrating. The humidity inside a pressurized cabin sits somewhere around 10–20%, which is drier than most deserts.
After a long-haul flight, even mild dehydration amplifies every jet lag symptom, the headache, the brain fog, the general feeling of being half-alive.
Because of that, you should drink water consistently throughout the flight. Carry an empty bottle through security and fill it up at the gate. It sounds basic, but most people forget completely once they're seated, especially on night flights.
Additionally, alcohol on a plane feels festive, and nobody's going to lecture you about having a glass. But alcohol disrupts sleep quality significantly. On a long-haul flight, where good sleep is valuable, that trade-off usually isn't worth it.
Caffeine is a different story.
Used well, it's one of the better tools you have. A cup of coffee in the morning at your destination can help you push through the early sluggishness while your body adjusts.
The catch is timing. Caffeine after 2 or 3 pm (destination time) can make it harder to fall asleep at night, compounding the problem you're already dealing with.
5. Eat Like You're Already There
Your digestive system runs on its own internal clock. Bloating, discomfort, and nausea are all common jet lag symptoms that get worse when you eat heavily at the wrong times.
The CDC actually recommends smaller, lighter meals when you're managing jet lag. Your gut needs time to re-sync, and smaller meals are easier to process regardless of what hour your body thinks it is.
More importantly: eat according to your destination's schedule, not your home schedule.
Hungry at what feels like midnight, but it's noon in Paris? Eat anyway, a light meal.
Not hungry at all, but is dinner being served? Try to eat something small.
6. Try Melatonin — But Do It Right
Melatonin is the most talked-about jet lag remedy, and it actually works.
Your body produces it naturally to signal that it's time to sleep, and you can take it as a supplement to move that signal earlier or later than your body would naturally produce it.
The key is timing it correctly.
- If you've traveled east and need to fall asleep earlier than your body wants, take melatonin about 30 minutes before your target bedtime at the destination.
- If you've traveled west and wake up too early, you can take a small dose in the very early morning hours (say, 3 or 4am) to help you sleep longer.
Talk to your doctor before adding melatonin to your routine, especially if you're on other medications. It's generally considered safe for short-term use, but it does interact with certain drugs, and dosing recommendations vary depending on the person.
7. Keep Your Sleep Space Comfortable
This one seems obvious, but it's worth spelling out because hotel rooms, even nice ones, are weirdly hostile to good sleep.
The lighting is often too bright, the temperature controls are confusing, and there's usually some mystery appliance that beeps at 6 am for no apparent reason.
Before you go to sleep your first night, do a quick sweep:
- Set the thermostat to something cool. Most people sleep best around 65–68°F (18–20°C). Hotels tend to default to warmer settings.
- Silence every clock, phone, and notification in the room. Your phone's alarm is fine; everything else should be quiet.
- Use blackout curtains if available.
8. Move Your Body — Even a Little
A short walk, a 20-minute run, or even an outdoor stretch session does a few things at once.
It exposes you to natural light (which, as we covered, helps reset your clock).
It slightly elevates your core temperature, which is part of your body's natural wake signal. And it burns off that restless, overtired feeling where you're exhausted but can't settle, a feeling jet lag specializes in producing.
You don't need to go hard.
A long, slow walk through wherever you've landed, taking in the new city, or just getting out of the hotel, is enough.
The point is to move and to be outside during daylight hours, not to hit a personal record on the treadmill.
How Long Does Jet Lag Actually Last?
A rough but reliable rule is: one day of recovery for every time zone you cross.
Cross five time zones, expect about five days of adjustment. Cross nine, you're looking at closer to a week before you feel yourself fully.
Eastbound travel is generally harder than westbound.
Going east asks your body to fall asleep and wake up earlier than it's used to, and most human circadian rhythms run slightly longer than 24 hours, making it naturally harder to advance them. Going west, you tend to stay up later, which feels more natural to most people.
That said, the tips above can meaningfully shorten that timeline.
People who aggressively manage light exposure, sleep timing, and hydration often feel functional in half the time it would otherwise take.
Jet Lag Won't Win If You Don't Let It
Crossing time zones doesn't have to mean sacrificing the first days of your trip.
Reset your clock immediately, use light therapy glasses to push your circadian rhythm in the right direction, sleep strategically, stay hydrated, and let melatonin do its job at the right time.
Want more travel health tips, sleep science, and practical guides? Head over to our blog here.
