Jet lag is not just about time zones. It’s about light exposure, hydration, sleep debt carried onto the aircraft, and the quality of rest you get at 38,000 feet. The good news: most of the variables are controllable.
48 hours before departure
Start shifting your sleep time 30 minutes toward your destination timezone each day. Keep your room as dark and cool as possible. Avoid alcohol for the 24 hours before your flight — it fragments sleep architecture even when it helps you fall asleep faster.
On the aircraft
Block light completely. Even a small amount of cabin light through a standard eye mask is enough to suppress melatonin production. Use a 3D contoured mask that maintains a dark seal even when you move.
Wear filtered earplugs rather than noise-cancelling headphones for sleep phases — they reduce the low-frequency engine rumble without requiring active noise processing.
On arrival
Get natural light exposure within two hours of landing, regardless of local time. A 20-minute walk outside resets the suprachiasmatic nucleus faster than any supplement.
