Sleep is your life-support system and Mother Nature's best effort at keeping us healthy, says sleep scientist Matt Walker.  In this deep dive into the science of slumber, Matt Walker shares the wonderfully good things that happen when you get sleep -- and the alarmingly bad things that happen when you don't, for both your brain and body. Learn more about sleep's impact on your learning, memory and immune system  -- as well as some helpful tips for getting some shut-eye.

Running time is approximately 14 minutes