In the study, 48 healthy adults, aged 21 to 38, had their sleep chronically restricted. In a 2003 study, researchers at the University of Pennsylvania and Harvard Medical School found that reaction times and performance on cognitive tasks plummet for those getting four hours of sleep and those getting six hours of sleep. What happens when we don’t get enough sleep? And while some people seem to need less sleep than others, we can’t game our body clocks. Kirsch said that this early-rising trend propagated by entertainers and entrepreneurs is deeply troubling. What he left out of the picture is he was a pretty prolific napper as well.”ĭr. “Thomas Edison used to say the same thing: Four hours are good enough for me. Kirsch, a neurologist and the president of the American Academy of Sleep Medicine. “This trend goes back a fair bit further than our recent tech C.E.O.s,” said Douglas B. Is the key to success emulating high-profile achievers who are hacking their bodies to increase productivity? Even if capitalism favors early wake-up times, at least as a badge of honor, there is no data that shows that successful people get less sleep.Īmericans sleep, on average, less than seven hours a night, which means that many of us get less sleep than the American Academy of Sleep Medicine recommends. Recently, Steve Harvey declared: “Rich people don’t sleep eight hours a day.” And Jennifer Aniston wakes up at around 4:30 to meditate, as does Kris Jenner, the same time that Michelle Obama is hitting the gym. David Cush, the former Virgin America C.E.O., has said that he wakes up at 4:15. President Trump wrote in his 2004 book that he only needs four hours of sleep a night.
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