Your nightly sleep cycle plays a key role in the quality of your sleep. Here's what happens in each stage and why it matters ...

Sleep paralysis is common, and rarely harmful, though it can be scary. Here's what you should know about the causes, risk ...

Sleep regularity (waking up and going to bed at the same time every day) could be more important than sleep duration in predicting heart attack and stroke. A new study found that even when individuals ...

High stress sleep positions create] excess tension or pressure on key parts of the body—such as the neck, shoulders, lower ...

Your toddler climbs into bed with you again at 2:14 a.m. You’ve barely settled back into REM when your alarm goes off. And when you rate your mood in that sleep-tracking app? Meh, at best. According ...

The frustrating cycle of hitting snooze and struggling through mornings despite adequate sleep duration affects millions of Americans. This disconnect between sleep quantity and morning alertness has ...

From tart cherry juice to the timing of your last meal, the emerging science of chrono-nutrition reveals how specific foods ...

With daylight saving time fast approaching, our sleep cycles are about to get thrown for a loop. But don’t panic — you don’t have to rely on pharmaceutical sleep aids that leave you groggy or tired.

AI-generated summary reviewed by our newsroom. Read our AI Policy. Are you a bear, wolf, lion or dolphin? You may not think any of these wild animals have to do with sleep. However, they actually ...

Does your teen always seem exhausted, irritable, or struggling to stay awake in class? You're not alone. We're facing what experts have called a sleep deprivation epidemic among American teens. The ...

Melatonin is a supplement most often taken as a sleep aid. Some research shows it may have benefits for people with Alzheimer’s disease, but current evidence is mixed. Melatonin is a hormone produced ...