How to Beat Jet Lag: A Practical, Evidence-Based Guide
How to beat jet lag: shift your sleep before you fly, switch to local time immediately on arrival, use daylight strategically, stay hydrated, and go easy on alcohol. Light is the key tool.
Quick answer
To beat jet lag, start shifting your sleep schedule toward your destination a few days before you fly, get plenty of daylight at the right times once you arrive, switch to the local schedule immediately (eat and sleep on local time), stay hydrated, and go easy on alcohol and caffeine. Light exposure is the single most powerful tool.
Jet lag happens when your body clock is still on home time while you’re living on destination time. You can’t eliminate it entirely, but a few evidence-based habits genuinely shorten it. The general rule of thumb: it takes about a day per time zone to fully adjust — these tips speed that up.
Before you fly
- Shift your schedule gradually. A few days out, move your bedtime and mealtimes an hour or so per day toward your destination’s time — earlier if flying east, later if flying west.
- Arrive rested, not wrecked. Don’t board already sleep-deprived; it makes everything worse.
On the plane
- Set your watch to destination time as you board and start thinking in it.
- Sleep according to destination night, not home time — use an eye mask, earplugs, and skip the in-flight entertainment if it’s their bedtime.
- Hydrate, and go easy on alcohol and heavy meals, which disrupt sleep and worsen the fug.
When you arrive — the important part
- Switch to local time immediately. Eat meals and go to bed on the local schedule from day one, even if it’s hard. Napping is fine, but keep it short (20–30 minutes) and not too close to local bedtime.
- Use daylight deliberately. Light is the strongest signal to your body clock. Broadly: after an eastward flight, seek morning light and avoid bright light late; after a westward flight, get light in the late afternoon/evening to push your clock later. Getting outdoors also just helps.
- Stay active and hydrated, and don’t crash into bed at 3pm.
What about melatonin and sleep aids?
Some travellers find melatonin helps reset the clock, taken near destination bedtime — but timing matters and it’s not right for everyone, so it’s worth checking with a pharmacist or doctor first. Sleeping pills knock you out but don’t actually shift your body clock, and can leave you groggy. There’s no magic pill; light and schedule do the heavy lifting.
The short-trip exception
If you’re only away for a day or two, it can be easier to stay on home time and schedule around it than to fully adjust and then flip straight back.