Whether you're flying overseas or just across the country, the effects of rapid time-zone shifts can be surprisingly severe. Some people reach for Ambien, but without a universal remedy at hand, most of us just struggle through. But there's plenty of good advice from people who travel across time zones all the time, which is why we asked these well-known flyers for their proven methods of beating jet lag.
Snack, Don't Chow.
"When we fly to Nepal, we're 12 hours off. That's major jet lag. The key is getting proper rest on the plane. I don't eat big meals – I simply can't sit for hours with a full belly. I snack on crackers, cheese, and fruit. Then I usually take a half-dose of a sleeping pill and put on headphones with mellow music from my iPod." - Ed Viesturs, mountaineer, has summited Mount Everest seven times
Credit: Elaine Thompson / AP