Let the games begin. Its go time. Welcome to the show. Im susan sikora. Think back to the last time you saw a sleeping baby. You may have thought i wish i could sleep that soundly. Youre not alone. Between 50 and 70 million americans have trouble sleeping. The condition is often undiagnose and untreated. Why . Can you selfdiagnose nose a sleep problem . Meet ph. D. Matt walker. He studies sleep and the affects on the body and brain. He directs the sleep and Neuro Imaging lab. Lets go back to the baby. It seems like we all needed to sleep like, that through anything. You see babies sleeping in the middle of the noise. Did we all start like that . What happened along the way . We did start like that. We have a huge need for sleep in the early years. We shouldnt fool ourselves that once we get to adulthood we no long need sleep. Sleep is vital throughout the life span. If the body needs the sleep when were babies and still needs the sleep when were older and very old, what happens . Why d