Matt Walker is a brain scientist trying to understand why we sleep. Learn more A TED ORIGINAL SERIES Sleeping with Science Sleep — we spend one-third of our lives doing it, but what exactly do we get out of it? And how can we do it better? In this TED series, sleep scientist Matt...
We've all been told to get a good night's sleep before a test -- finally, here's the reason why. Sleep scientist Matt Walker explains how getting enough sleep affects how our brains store and process memories.