What should you know about jet lag duration?

Jet lag duration depends on how far the local clock differs from your usual schedule, whether you travelled east or west, how well you sleep during the transition, and whether you keep a consistent local routine. Daytime sleepiness, difficulty sleeping, headache, low concentration, and appetite changes may fade at different speeds. Travel fatigue can overlap with jet lag, so feeling tired immediately after a journey does not by itself show that the body clock has fully adjusted or failed to adjust.

Set your watch to local time and follow that schedule for waking, meals, activity, and bedtime. Use daylight and darkness deliberately, because light is a strong signal for the body clock. Keep the bedroom quiet and dark at the planned sleep time, and avoid long daytime naps. Regular hydration and light movement can make the transition easier. For complex itineraries, a travel health consultation can help plan the timing of light, sleep, and any medicine safely.

Arrange a review if symptoms are not easing, keep returning after travel, or continue to interfere with work, study, or safe driving. Persistent night-time difficulty sleeping or daytime sleepiness may indicate insomnia or another sleep problem rather than jet lag alone. Seek urgent care for severe confusion, fainting, chest pain, breathing trouble, a sudden severe headache, or new weakness on one side.

Ask what recovery pattern is reasonable for your route and whether your current symptoms fit jet lag. Discuss your usual bedtime, arrival schedule, medicines, caffeine use, and any condition that affects sleep before trying a treatment.