Two and a half years ago Arianna Huffington fainted from exhaustion, hitting her head on the way down. She had to get five stitches near her eye. Shortly after the accident, she became an advocate for getting more sleep.
Here she is at the TED Women conference telling attendees about the benefits of sleep. Yes, it's pretty obvious that a lack of sleep isn't good, but it's really hard to make a commitment to get enough sleep. Now that my kids are a little older, is been easier for me to get between seven and eight hours of sleep a night, and the biggest benefit for me is a reduced sense of stress throughout the day.
[U]nfortunately, for men sleep deprivation has become a virility symbol. I was recently having dinner with a guy who bragged that he had only gotten four hours sleep the night before. And I felt like saying to him — but I didn't say it — I felt like saying, "You know what? If you had gotten five, this dinner would have been a lot more interesting."