Flying across time zones scrambles your internal clock, leaving you groggy when you should be exploring. The good news: sleep scientists have found reliable ways to reset your body faster. These 12 science-backed tips will help you beat jet lag on your next trip.
1. Shift your schedule before you fly
Three days before departure, move bedtime one hour per day toward your destination’s time zone. Flying east? Go to bed earlier. Flying west? Stay up later. Your body clock adjusts about one hour per day, so arriving half-shifted cuts recovery time dramatically.
2. Book flights strategically
Choose flights that land in the late afternoon or evening local time. This makes it natural to stay awake a few hours and then sleep at a normal local bedtime — exactly what your body needs to reset.
3. Use light like medicine
Bright morning light tells your brain it is time to be awake; darkness triggers melatonin. After an eastbound flight, seek morning sunlight. After a westbound flight, get afternoon and evening light. Avoid bright light at the wrong times with sunglasses.
4. Time your caffeine wisely
Coffee helps you stay alert, but caffeine after local noon delays your body clock. Drink it in the morning at your destination, then switch to water. Dehydration from cabin air makes jet lag symptoms noticeably worse, so drink water through the whole flight.
5. Consider melatonin
A small dose of melatonin (0.5–3 mg) taken at local bedtime can speed adjustment, especially eastbound. It works best combined with light exposure and a consistent sleep schedule — and it is worth discussing with your doctor if you take other medications.
Jet lag fades fastest when you commit fully: eat, sleep, and exercise on local time from day one. Within two to three days, your body catches up — and your trip feels twice as long.