As I often find myself lacking the time, or the energy, to study complex topics in Mathematics or Biology, I choose to spend three hours working in the afternoon and then go to sleep at ten o’clock. Therefore I would be able to wake up the next day at five o’clock in the morning and study one or two more hours before courses start. This would give me about six hours and a half of sleep (taking into account that I don’t fall asleep right away).
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 (http://www.ted.com/talks/russell_foster_why_do_we_sleep#t-592084).
This 21 minutes video of Dr. Russell reveals some pretty interesting discoveries neuroscientists have recently made.