Main Question or Discussion Point
From time to time we read about people who sleep three or four hours per day day. E.g. Thatcher, Churchill, Arafat, Edison etc. all slept just a few hours per day (about four hours if I remember correctly).
So, it looks like most people who need 7 to 8 hours sleep are not sleeping efficiently. But then the question is why evoluton did not lead to more efficient sleep for most people? Is it because less efficient sleep leads to people spending more time in bed leading to more sex and thus more children?He only sleeps three or four hours a night," says Jason Box, a former Steffen protg now at Ohio State University's Byrd Polar Research Center. "There has been some speculation among us that he isn't actually human. Some of his students believe that he has espresso running through his veins
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