Many of us know what it's like to feel deprived on a good night's rest, but did you know that 1% to 3% of the population can actually live happily with just a few hours of sleep per night?

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What other superhuman qualities do these members of 'The Sleepless Elite' have? According to researchers, they don't need caffeine, and are energetic and upbeat despite having only a few hours of sleep. They tend to be thin, thanks to a fast metabolism, and they have a high tolerance for physical and psychological pain!

However, before you decide that you want to be a member of the sleepless elite, psychiatrists give this warning:
Out of every 100 people who believe they only need five or six hours of sleep a night, only about five people really do, Dr. Buysse says. The rest end up chronically sleep deprived, part of the one-third of U.S. adults who get less than the recommended seven hours of sleep per night, according to a report last month by the Centers for Disease Control and Prevention.

To date, only a handful of small studies have looked at short sleepers—in part because they're hard to find. They rarely go to sleep clinics and don't think they have a disorder.