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Aging Brain's Internal Clock Fades

Ever notice the catnaps that older relatives take in the middle of the day? Or how grandparents tend to be early risers? You're not alone. Colleen McClung did, too. A neuroscientist at the University of Pittsburgh Medical Center, McClung wanted to know what was going on in the brain that changes people's daily rhythms as they age. #FullNewsAudioAvailable #NPR


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