Updated 2026
Your body has a clock, and flying across time zones confuses the hell out of it.
The general rule: your body adjusts about one to two hours of time change per day. So if you're jumping twelve time zones (say, from Los Angeles to Bangkok), expect 6-12 days to feel normal again. Ten time zones? 5-10 days. Flying east is typically harder than flying west because you're compressing your day rather than extending it.
Here's what happens on a cellular level: Your circadian rhythm is governed by light exposure and melatonin production. When you land in a new time zone, your body's internal schedule doesn't match the sun outside. You're exhausted at 3 PM. You're wired at 2 AM. This isn't laziness; it's physiology.
What actually helps:
- Get sunlight immediately upon arrival, especially in the morning.
- Avoid sleeping on the plane if you arrive in the morning. Force yourself to stay awake until a reasonable bedtime.
- Stay hydrated. Dehydration makes jet lag feel worse.
- Melatonin supplements (3-5mg) taken at your destination's bedtime can speed adjustment.
- Avoid alcohol and heavy meals on the plane. Both disrupt sleep quality.
- Exercise helps reset your clock. A walk or run on arrival day matters.
There's no cheat code. You can't eliminate jet lag; you can minimize it. Accept that your first 3-5 days will feel strange. Your productivity will be low. Your mood might be weird. This is normal. By day 7-10, you'll be fine.
Plan your schedule accordingly. Don't book important meetings or strenuous activities for your first week. Use it for orientation, lighter tasks, and exploring at a slow pace.