Everyday nearly 2 million people board planes to travel to destinations far from their homes. Many of these people will cross multiple time zones ending up in new locations many hours ahead or behind of what the traveler is used to.
Considering our long history as a people, rapid travel is a very new development. One in which people’s biological makeup is still having difficulty adjusting to. Many travelers experience difficulty sleeping and trouble staying awake or alert when they arrive at a new location. This common occurence is known as jet lag.