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

Spending less time in slow wave and REM sleep may accelerate brain atrophy in regions affected early in Alzheimer’s disease, ...

The amount of deep sleep you need changes with age, with babies and children requiring significantly more. Find out exactly ...

Sleep paralysis, a common yet frightening experience, affects about 20% of people, causing temporary immobility and vivid ...