Imagine you’re embarking on the trip of your dreams, only to be taken down by jet lag once you arrive. You spend the first few days roaming around like a zombie, thanks to all those sleepless nights.

Add Yahoo as a preferred source to see more of our stories on Google. Jet lag: travel’s uninvited guest. It’s the yawning at 3 p.m., the groggy mornings, the messed-up internal clock that makes ...

Any traveler who crosses multiple time zones is likely to experience jet lag. The good news, however, is that jet lag can be prevented. Whether you're traveling for the upcoming holidays or a business ...