REM stages and one REM stage. Ideally, you repeatedly cycle through each stage. Learn how long each stage lasts.

Ever wondered if you actually shed pounds while sleeping? Discover the surprising science behind overnight weight loss, how ...

Obstructive sleep apnea (OSA)—when the soft tissues in the throat collapse and block the airway—especially correlates to ...

It's no secret that a good night's sleep is key to a healthy brain. However, the full extent of the importance of rest on our ...

Sunlight plays a huge role in our energy levels and sleep quality. One study found that those who got enough morning sunlight ...

Hallucinogens like DMT, psilocin, and LSD might rewrite the rules of sleep, blurring the line between dreams and reality.

Scientists say that poor sleep quality could shrink parts of the brain and increase the risk of Alzheimer's disease.

Research reveals how specific sleep stages protect brain vulnerable to Alzheimer's, offering hope through simple lifestyle changes THAT anyone can implement ...

Spending lower proportions of time in two deep sleep stages — including REM sleep — may be linked to volume changes in ...

The authors suggest that it is related to sleep stage and serotonin acting at one type of serotonin receptor in the dentate gyrus. The results are significant because they suggest new insight into how ...

Success isn't just about strategy and execution — quality sleep fuels energy, decision-making and emotional stability. These six simple sleep habits will help you perform at your best every day.