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PosterPoster

TED Talks: Season 2013

2013x162 Russell Foster: Why do we sleep?
TV-PG

  • 2013-08-14T06:00:00+02:00 on YouTube
  • 15 mins
  • United States
  • Documentary, Special Interest

Russell Foster is a circadian neuroscientist: He studies the sleep cycles of the brain. And he asks: What do we know about sleep? Not a lot, it turns out, for something we do with one-third of our lives. In this talk, Foster shares three popular theories about why we sleep, busts some myths about how much sleep we need at different ages — and hints at some bold new uses of sleep as a predictor of mental health.

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