A importância do sono II: Russell Foster: Why do we sleep? | Video on TED.com

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.

Russell Foster: Why do we sleep? | Video on TED.com

Nota: esta palestra ainda não tem legendagem em português, mas as legendas em inglês poderão ajudar a compreender alguns termos mais técnicos utilizados por Russell Foster.