Jet lag: 11 practical ways to adjust faster, east or west

Jet lag is what happens when your internal body clock and the local clock disagree. Your sleep, hunger and alertness all follow a daily rhythm set mostly by light, and that rhythm does not reset the moment you land. The result is familiar: wide awake at 3 a.m., foggy at lunch, hungry at odd hours. The good news is that the body clock does shift, and a few simple habits help it shift in the right direction. This guide is general travel advice, not medical advice: if you have a health condition, take regular medication or are thinking about sleep aids or supplements, talk to a doctor or pharmacist before you travel.

1.Know which way you are going

Direction matters. Flying west makes your day longer, and most people find it easier to stay up a little later than usual. Flying east makes your day shorter, which means going to sleep and waking up earlier than your body wants, and many travellers find that harder. That is why a trip from the Americas to Europe, or from Europe to Asia, often feels rougher than the flight home. The number of time zones counts too: a two- or three-hour shift is usually a nuisance for a day or two, while a trip that flips day and night can take noticeably longer to settle. Plan your first days with that in mind.

2.Choose flight times that help you

When you have a choice, pick a flight that lands at a sensible local time. For many eastbound long-haul routes, an overnight flight that arrives in the morning lets you sleep on board and then stay up until a normal local bedtime. For westbound trips, an arrival in the late afternoon or early evening means you only have to stay awake a few more hours before bed. A very late-night arrival after a long day of travel, on the other hand, can leave you wired and sleepless in a hotel room in the small hours.

3.Start shifting a few days before you leave

If your schedule allows, nudge your bedtime towards the destination in the days before departure. Going east, go to bed and get up a little earlier each day; going west, a little later. Even a partial shift means less to catch up on when you land. This is easier for longer trips and for travellers with flexible mornings, and it is not worth losing sleep over: arriving well rested matters more than arriving perfectly pre-adjusted.

4.Switch to destination time as soon as you board

Set your watch and phone to the local time at your destination when you take your seat, and start thinking in that time. If it is night where you are going, try to rest: an eye mask, earplugs or noise-cancelling headphones, a neck pillow and layers you can adjust all help. If it is daytime there, watch a film, read or walk the aisle rather than sleeping the whole flight. You will not match the new schedule exactly on a plane, but leaning towards it gives you a head start.

5.Use daylight on purpose

Light is the strongest signal your body clock responds to, so it is the most useful tool you have. Once you arrive, get outside in daylight during the local daytime, especially in the morning after an eastbound trip and in the afternoon and early evening after a westbound one. A walk, a café terrace or simply sightseeing on foot all count. In the evening, keep lights low and screens dim as bedtime approaches. Timing your light well is one of the simplest ways to help the shift along.

6.Drink water, and go easy on alcohol and caffeine

Cabin air is dry, and feeling dehydrated makes travel fatigue worse. Drink water regularly through the flight. Alcohol can make you drowsy but tends to disrupt sleep, so a drink on board can leave you feeling worse on arrival. Caffeine is useful for staying alert in the local morning, but avoid it in the hours before you plan to sleep, or it can push your new bedtime later.

7.Eat on local time

Meal times are another cue for your body. Once you land, eat breakfast, lunch and dinner at normal local times, even if you are not especially hungry. Keep the first evening meal light rather than heavy, and avoid a large meal right before bed. On the plane, it can help to eat when it is a mealtime at your destination rather than whenever the trolley comes round.

8.Handle the first day carefully

Arrival day sets the tone. Try to stay up until a reasonable local bedtime. If you are exhausted, a short nap early in the afternoon can get you through, but set an alarm: a long nap in the middle of the day often makes the first night harder. Keep the first day light: a stroll, a relaxed meal, an early night. Leave the big museum, the long tour or the important meeting for day two or three if you can.

9.Ask about early check-in or luggage storage

One of the hardest parts of a morning arrival is having nowhere to go. Standard hotel check-in is usually in the afternoon, so ask your hotel before you travel whether an early check-in is possible, whether it costs extra, and whether they can hold your bags. Some travellers book the room from the night before so it is ready on arrival; whether that is worth it depends on the price and how tired you expect to be. At the very least, knowing you can drop your bags and freshen up makes staying awake much easier.

10.On short trips, consider staying on home time

If you are only away for a day or two across a few time zones, it may not be worth adjusting at all. Some business travellers keep roughly to home time, schedule important meetings for when they would naturally be alert, and adjust again when they get back. This works best for short trips and small time differences. For a holiday of a week or more, it is usually better to adapt to local time quickly and enjoy the trip.

11.Plan the trip home too

Jet lag works in both directions, and the return often hits when work, school and everyday life are waiting. If you can, fly home a day before you need to be back at your desk, and use the same tricks: daylight at the right time, meals on local time and a sensible first night. Treat the return as part of the trip rather than an afterthought.

Jet lag cannot be avoided completely on a long trip, but it does not have to eat the first days of your holiday. Pick your flight times with care, lean into local time from the moment you board, use daylight well and give yourself an easy first day. Your body clock will catch up, and the trip will start feeling like a trip sooner.

Disclosure: Voyaggora earns a commission if you book through our Trip.com or Airalo links, at no extra cost to you. This article is general travel information, not medical advice. Hotel check-in policies, fees and flight schedules are set by each provider and change often, so always check the terms of your booking. See our affiliate disclosure.