Why does jet lag cause difficulty sleeping?

Difficulty Sleeping is a very common presentation of Jet Lag. Your internal rhythm influences when you feel sleepy, when body temperature changes, and when you are most alert. Crossing time zones quickly separates this rhythm from the local schedule. You may lie awake at bedtime, wake unusually early, or sleep lightly because your body still expects a different day-night pattern. Travel stress, noise, alcohol and caffeine can make the mismatch feel stronger.

Set your watch to local time and aim for a consistent local wake-up time. Get daylight at times that support the schedule you are moving toward, and make the bedroom dark, quiet and comfortably cool. Keep evening meals light if large meals disturb your sleep. Avoid alcohol close to bedtime and limit late caffeine. If you cannot sleep, choose a quiet, low-light activity until you feel drowsier rather than watching the clock.

Contact a clinician when sleep difficulty continues beyond the expected travel adjustment, happens without recent travel, or is affecting mood, work or safety. Get urgent help for thoughts of self-harm, severe confusion, chest pain, trouble breathing, fainting, or a sudden severe headache. These symptoms need prompt attention and should not be attributed to jet lag.

Ask whether a medical condition or medication could be disrupting sleep, and whether a short-term sleep aid is appropriate for you. If you cross time zones often, ask for guidance tailored to the direction and timing of your travel.