You might wake up groggy, even after a full night's sleep, if you haven't gotten enough sleep lately. Other reasons include ...

Sleep helps the brain to cleanse itself—and now this process can be measured in humans entirely noninvasively. Researchers at ...

cCharles Perkins Centre, University of Sydney, Sydney, NSW, Australia dCentre for Precision Data Science, University of Sydney, Sydney, NSW, Australia eSchool of Public Health, Faculty of Medicine and ...

Smart ring maker Ultrahuman has released findings from one of the largest real-world metabolism studies ever conducted, offering evidence that sleep timing is more important than duration for the body ...

A large population study of middle-aged adults suggests that habitual coffee drinking may have far less impact on sleep and daytime fatigue than commonly believed, raising new questions about ...

Don’t sleep on this nutrient. If you’re not getting enough sleep, you could be missing out on some vital dietary staples. But you shouldn’t only aim for more sleep, but quality, deep sleep as well.

Eight hours of sleep used to be the norm, and all-nighters with only a few hours of rest were rare among teenagers. In recent years, however, there has been an alarming decline in sleep duration. It ...

New neuroimaging research shows that when sleep-deprived people lose focus, the brain briefly shifts toward sleep-like physiology, offering fresh insight into why cognitive performance declines ...

A new study out of the University Of Pennsylvania suggests certain noises promoted to support sleep may be more harmful than we thought. Sound machines and apps that play so-called pink noise are ...

Researchers at the University of Pennsylvania conducted a seven-night sleep laboratory study and found that REM sleep decreased by an average of 19 minutes per night when participants were exposed to ...

Pink noise, a staticky sound that’s supposed to help people fall asleep, may actually worsen your rest, a new study found. Subscribe to read this story ad-free Get unlimited access to ad-free articles ...

You're probably already aware of the effects of not getting enough sleep. Not only can sleep deprivation lead to mental and physical health risks, studies have shown that it can shorten life ...