Don’t sleep on an early bedtime. The average American goes to bed at 11.39 p.m., but one expert says we should be preparing for shut eye hours earlier than that. Nutritionist Kate Booker says the best ...

The old advice to simply get eight hours misses a bigger picture, researchers say. New studies reveal that timing, ...

Adults should be getting at least seven hours of sleep each night, according to the American Academy of Sleep Medicine. "Below that, there's clear evidence that you're going to feel lethargic during ...

With so much to do heading into the busy holiday season, is anyone getting enough sleep? Most sleep experts advise that adults get seven to nine hours of sleep per night for good health and emotional ...

The following story is excerpted from TIME’s special edition, The Science of Sleep, which is available at Amazon. Anyone who has nodded off on the subway, faked alertness in a meeting at work or ...