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Deep sleep is the mentally and physically restorative stage of sleep. How much of it do you actually need?

Most adults wish they could catch more ZZZs for better health, sharper focus or simply to wake up feeling rested. Despite that desire, sufficient sleep remains elusive for millions. About one in three ...

This story is from Manual, GQ’s flagship newsletter offering useful advice on style, health, and more, four days a week. Sign up here to get it in your inbox. Sleep is a tricky thing. Sometimes you ...

One barrier to sleeping well is high mental activity, or consistent mental chatter, when we are in bed. Unfortunately, we don’t have a switch that turns our brains off, and many of us think and worry ...

The jury is in on sleep: We must have quality sleep—and enough of it—to perform at our best. Inadequate sleep doesn’t always or necessarily lead to full-blown illnesses like depression or anxiety, but ...

We all know that sleep is essential for good health; however, recent research suggests that quality sleep and athletic performance begin with the proper bedtime. The study, published in June of this ...

Most people know that it’s important for adults to get around six to nine hours of sleep each night. But a growing body of research suggests that when you fall asleep and wake up each day may be just ...

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 ...

Ever wonder why some mornings you wake up ready to go, and others you feel like a zombie? The difference often comes down to when you wake up during your sleep cycle, and that’s exactly what a sleep ...