Sleep is a critical component of well-being, and proper sleep promotes healthy body function and healing. A recent study found that people experience more REM sleep during winter, which is a vital ...

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. A significant proportion of American adults are not getting enough ...

The amount of sleep a person needs recalibrates over time, and circadian rhythms change with age. The 16-year-old who stayed up until midnight may become a 36-year-old who gets drowsy by 10 p.m. At 70 ...