Researchers have discovered that positive emotions enhance perceptual memories during sleep, particularly in the non-REM stage.

REM sleep goes even deeper into brain recovery, dreaming and processing memories and emotions. This is the sleep stage in ...

Recent studies reveal how the timing of dreams may offer clues to Alzheimer's risk. How sleep patterns impact cognitive health and prevention.

New research on ‘slow-wave sleep’ may have implications for others battling insomnia, including people with anxiety and ...

Alcohol is often used as a sleep aid – with some people crediting a "nightcap" with helping them fall asleep more easily. But ...

A sleep expert details why you wake up groggy from a nap and how to make the most of your snack-sized slumber.

Another big cause of nighttime awakening is caffeine. Caffeine has a half life of 5 hours, meaning it can take 5 hours for ...

Shorter naps only include stage-two sleep, which is particularly helpful for alertness and memory, said Sara Mednick, a sleep ...

Considering how much time cats spend asleep it seems reasonable that they would have dreams. Cats sleep 15 hours a day on ...

People who make a habit of sleeping on the job comprise a secret society of sorts within the U.S. labor force. Inspired by ...

Sleep is an essential, often overlooked aspect of our physical and mental health. Acquiring adequate sleep can have ...

As scientists unravel how sleep benefits the body, a study in mice is highlighting the potential pitfalls of using Ambien and other sleeping pills.