Your brain cycles through several stages during sleep, and REM sleep might be the most critical. This mysterious phase, where ...

You know as well as we do that the amount and type of sleep you get every night can significantly affect your mood, energy level and comfort throughout the day. But isn't it odd that sometimes you ...

REM sleep is essential for short-term resilience and long-term health. Experts share tips for the best way to get more of ...

Your sleep cycle includes light, slow-wave, deep, and REM sleep, which repeat throughout the night. To get restful sleep, you need to spend the right amount of time in each stage of the sleep cycle.

Any sleep tracker will show you that slumber is far from a passive affair. And no stage of sleep demonstrates that better than rapid eye movement, or REM, commonly called dream sleep. “It’s also ...

I'm a contributor specializing in sleep and beauty content. You may remember little to nothing when you wake up, but there’s a lot going on while you sleep. You just spent the previous seven to nine ...

Deep sleep refers to slow-wave sleep — a stage in the sleep cycle when brain waves slow down. Getting enough deep sleep is crucial for numerous bodily functions. But how to increase deep sleep isn’t ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Smart mattresses connect wirelessly to apps or remotes and allow you to customize some aspect of the ...