How sleep can improve your immunity | Sleeping with Science, a TED series

One of the best things that you can do to boost your immune system is head to bed, says sleep scientist Matt Walker. It can even make your flu shot more effective! Sleeping with Science, a TED series, uncovers the facts and secrets behind our nightly slumber. Check out more episodes on TED.com: https://go.ted.com/sleepingwithscience