Sleep is quite crucial to the overall state of health, but women's sleep cycles differ with age, lifestyle, and hormones.

REM Sleep Behavior Disorder causes more than dream enactment—it’s a powerful clue to neurodegenerative disease risk.

Study findings suggest patients with OUD on opioid agonist therapy have disrupted sleep-wake cycles linked to low light ...

Many people who experience sleep paralysis see frightening hallucinations some call "sleep paralysis demons." (Leah Abucayan, ...

Sleep tracking is nothing new in Garmin’s fitness watches, but the company’s latest wearable is a dedicated smart sleep band.

During the night, when muscles go limp and dreams fade, the brain slips into slow-wave sleep - the quietest, most restorative phase.