Adjusting to a new time zone: sleep, energy and routine

Light is your strongest tool

Morning daylight is the most powerful signal for resetting your body clock. In your first week in a new time zone, get outside within an hour of waking — even ten minutes on a balcony or a short walk counts. In the evening, dim screens and lights to let your body wind down.

If you moved somewhere with very different daylight hours — long dark winters or bright late evenings — this matters even more. Treat daylight like an appointment in your first month.

Anchor your days with meals

Eating at local mealtimes helps your body understand where it is. Even if you are not hungry at first, having breakfast, lunch and dinner at roughly the new local times speeds up adjustment. Keep the first days simple: familiar, easy-to-digest foods and plenty of water.

Move a little, especially in the morning

Gentle movement in the morning — a walk, stretching, a short home routine — reinforces the 'daytime' signal. Intense late-night workouts can do the opposite in your first week, so keep evenings calm until you feel settled.

Be patient with yourself

A common rule of thumb is that the body adjusts by roughly one time zone per day, but everyone is different, and a full move abroad involves much more than the clock. Broken sleep, odd hunger times and afternoon slumps are normal in the first couple of weeks — not a sign that something is wrong with you.

If sleep problems persist for many weeks or affect your daily life, it is worth speaking to a doctor. For ordinary adjustment, time, daylight and routine do the work.