Published on Aug 14, 2013
RussellFoster 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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