Can an app help you avoid jet lag?

Choose a tool that builds a schedule from your departure point, destination, travel dates, and usual sleep pattern. Its reminders should support sensible travel habits rather than replace sleep or medical care.

Jet lag occurs when rapid travel leaves the body's internal clock out of step with local time. A planning app aims to shift that clock by recommending periods of bright light and reduced light exposure. It may also suggest when to sleep, eat, exercise, or avoid caffeine.

Advice differs by travel direction and schedule, so generic alerts are less useful than a personalised itinerary. Phone use near planned sleep can itself be stimulating; dim the display and follow the darkness period rather than continuing to browse.

Enter accurate flight and sleep details, review the schedule before departure, and set reminders that you can realistically follow. After arrival, use local daylight, meals, and activity to reinforce local time. Keep naps brief enough that they do not replace the next main sleep period.

Do not drive or operate machinery when sleepy. Avoid using alcohol as a sleep aid. If you take medicines or are considering melatonin, discuss timing and suitability with a pharmacist or doctor because health conditions and other medicines can change what is appropriate.

Arrange medical advice if difficulty sleeping or daytime sleepiness is severe, persists after you have had time to readjust, repeatedly affects work or driving, or occurs without recent travel. These patterns may point to insomnia, a sleep disorder, a medicine effect, or another health problem.

Seek urgent help for confusion, fainting, chest pain, severe shortness of breath, a sudden severe headache, or new weakness. These are not routine jet-lag symptoms and should not be managed through an app.

Before travel, ask whether your medical conditions or regular medicines affect sleep planning, light exposure, caffeine, or melatonin. Mention pregnancy, mood disorders, eye conditions, shift work, and previous severe reactions to time-zone changes so the plan can be tailored.