When you fly across multiple time zones, an unwelcome greeter may be waiting for you at the airport that can rob you of sleep, upset your stomach and generally make you feel out of sorts: jet lag.
Dorothee Steven, a psychologist in the Institute of Aerospace Medicine’s Department of Sleep and Human Factors Research at the German Aerospace Centre (DLR) in Cologne, Germany explains what causes jet lag, what the symptoms are, and what, if anything, you can do to prevent or alleviate it.
