10/03/2014 08:36 am ET Updated Oct 03, 2014

How To Figure Out Your Perfect Bedtime

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Many people categorize themselves as morning larks or night owls, but even they can have trouble finding the optimal moment to turn in for the night. One expert, Rafael Pelayo, a clinical professor in the division of sleep medicine at the Stanford School of Medicine, explains the secret to sorting out bedtime and why 8-year-olds are the best sleepers.

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