Jet lag is your body's protest against crossing time zones faster than biology intended. The more zones you cross, the worse it gets. But with the right strategies, you can significantly reduce its impact.
What Causes Jet Lag
Your body runs on a circadian rhythm — an internal clock that regulates sleep, hunger, and alertness based on light exposure. When you fly across multiple time zones, your internal clock is out of sync with the local time. It takes roughly one day per time zone crossed for your body to fully adjust.
Before Your Flight
- Shift your schedule: Start adjusting your sleep and wake times 2–3 days before departure. Go to bed an hour earlier (for eastward travel) or later (westward) each day
- Get sunlight at the right times: Bright light in the morning helps shift your clock earlier; evening light shifts it later
- Arrive well-rested: Starting a trip sleep-deprived makes jet lag significantly worse. Don't pull an all-nighter before a long flight
During Your Flight
- Set your watch to your destination's time zone as soon as you board
- Sleep on the plane only when it's nighttime at your destination
- Stay hydrated — drink water regularly and limit alcohol and caffeine
- Move around the cabin to keep your circulation flowing
After Arrival
- Get sunlight immediately: Natural daylight is the strongest signal for resetting your circadian rhythm
- Stay awake until local bedtime: Even if you're exhausted, pushing through to a normal local bedtime accelerates adjustment
- Use melatonin strategically: A small dose (0.5–3mg) taken 30 minutes before your desired bedtime can help your body adjust
- Eat on local time: Meal timing is a secondary clock signal. Eating breakfast, lunch, and dinner at local times helps your body adjust
- Avoid heavy exercise on day one: Your body is already stressed. Light walking is good; intense workouts can disrupt sleep further
Frequently Asked Questions
Is westward or eastward travel worse for jet lag?
Eastward travel is generally harder because it requires advancing your body clock (going to bed and waking up earlier), which is more difficult biologically than delaying it. Most people find it easier to stay up late than to fall asleep early.
Does jet lag get worse with age?
Yes. Older adults typically take longer to adjust because the circadian system becomes less flexible with age. The same trip that barely affected you at 25 might knock you out for days at 55.
Do flight crews get jet lag?
Yes, though experienced crews develop coping strategies. Many airlines have mandatory rest periods between flights, and crew members often use blackout curtains, melatonin, and strict sleep schedules to manage chronic time zone changes.
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