Jet lag happens when travelers cross several time zones and disrupt their normal sleep-wake cycle.

To reduce the duration and the symptoms, try to be outside when the sun is up. It may make for a very long (or short) first day, but it will help you adjust more quickly. Some travelers also try to change their sleep-wake habits before they leave.

Medicines are available that can promote sleep, but there are few studies on how well they work with jet lag.