7 Ways to Get Better Sleep
We spend roughly one-third of our lives sleeping. For something we do with such regularity, we know very little about sleep. Scientists have not yet fully figured out the exact functions of sleep. There are many theories about the role of sleep in our lives, as it appears to be a very complex and important process. In this TED Talk, a neuroscientist Russell Foster shares three reasons why we sleep and discusses how much sleep people generally need.