You snooze, you win!

According to new studies, nothing tunes up mind and body like a good nap. But there's an art to catching the right kind of z's.

When billionaire adventurer Steve Fossett broke the record for around-the-world solo jet flight last March, he slept just 60 minutes in 67 hours of flight time -- 60 minutes broken into two- and three-minute naps. "I slept when I needed it and awoke refreshed," he says