Why do we sleep?
9,056,441 plays|
Russell Foster |
TEDGlobal 2013
• June 2013
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.
Want to use TED Talks in your organization?
Start here