Lifestyle · 5 min read
How to Beat Jet Lag: Sleep Tips for Travelers
What Causes Jet Lag
Jet lag occurs when your internal circadian clock is out of sync with local time. Your body's master clock, located in the suprachiasmatic nucleus (SCN), takes cues primarily from light exposure to determine when you should be awake and asleep.
When you cross time zones faster than your body can adjust — roughly one time zone per day — you experience the misalignment as fatigue, insomnia, digestive issues, and difficulty concentrating. Eastward travel is typically harder because it requires advancing your clock (going to sleep earlier), which is more difficult than delaying it.
Before You Travel
Start shifting your schedule 2-3 days before departure. If traveling east, go to bed and wake up 30-60 minutes earlier each day. If traveling west, do the opposite.
Adjust your light exposure to match. For eastward travel, get bright light in the morning and avoid it in the evening. For westward travel, seek evening light and avoid early morning light.
Even a partial shift reduces the adjustment needed on arrival. Going from 6 hours of misalignment to 4 makes a meaningful difference in how you feel.
During the Flight
Set your watch to the destination time zone when you board. This mental shift helps you start thinking in terms of your new schedule.
If it's nighttime at your destination, try to sleep on the plane. Use the military sleep method: systematically relax your body from head to toe, then clear your mind. An eye mask and earplugs help create the conditions for sleep.
If it's daytime at your destination, stay awake. Light exercise in your seat, conversation, and caffeine (if it's morning there) all help. Avoid alcohol — it may help you sleep but disrupts sleep quality and worsens dehydration.
On Arrival
Get outside in daylight as soon as possible. Natural light is the strongest signal for resetting your circadian clock. Aim for at least 30 minutes of outdoor light exposure, even on cloudy days.
Stay awake until a reasonable local bedtime (no earlier than 8 PM). If you arrive exhausted, a 20-minute power nap before 3 PM local time is acceptable, but set an alarm — a longer nap will delay your adjustment.
Use a relaxation technique at your new bedtime. Your body won't be naturally sleepy yet, so the military sleep method or 4-7-8 breathing can bridge the gap between your body's clock and local time.
