Not getting enough sleep can increase the risk of stroke, heart attack, asthma, and kidney disease. In many parts of the United States, 40% of the population is not getting enough sleep. In this program, Burt talks to Professor Matthew Walker, one of the world's leading experts on sleep. Professor Walker explains the good things that happen to your brain and body when you get a proper amount of sleep, and what you can do to improve your sleep.

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