When billionaire adventurer Steve Fossett broke the record for around-the-world solo jet flight in 2005, 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 said. Fossett, whose world records in ballooning, sailing, and flying still stand, added that none of his feats could have been done without these micro-variety "power naps."
So what makes a power nap effective? Think of it as an investment with the greatest return in the least amount of time, a kind of super-efficient sleep that fits nicely in a high-pressure schedule: say, between business meetings or in the minutes before a game.