Stimulating the brain with gentle sounds during deep sleep significantly enhances heart function, according to a small study in men.

The sleep of people in Asia is more variable during the work week and they do not extend their sleep as much at the weekend.

"...these experiences bleed into and affect our waking lives—including how productive we are at work."

Fitbits fall short when it comes to accurately measuring sleep, but they perform well in capturing circadian rhythms, researchers say.

Research in mice suggests that brain cells called astrocytes could be key to staying awake without cost to cognition or health.

A new study finds that even when asleep, the sounds babies' hear play a role in their language development.

Loneliness can lead to sleepless nights for middle-aged and older adults, according to new research.

Cognitive behavioral therapy is effective for insomnia among individuals with alcohol use disorder, regardless of abstinence from alcohol, a study finds.

The next time you have trouble falling asleep, consider turning the clock around so you can't see it. Watching it makes insomnia worse.

Law enforcement investigators and detectives who are tired have a harder time collecting information that could bring justice to victims.