A new study found that less sleep could lead to a major side effect in adults.

There have been a number of studies on experimental sleep restriction. In previous experiments conducted in sleep labs, ...

Humans sleep less than every other primate on record, despite having the biggest brains — biologists call it the human sleep ...

For most of us, getting less than seven hours of sleep translates into grogginess, sluggish thinking, and an overwhelming urge to crawl back into bed. But some people wake up fresh and energized after ...

New study finds just six weeks of less sleep can lead to weight gain - The impacts were heightened in men and postmenopausal ...

Many Americans are getting too little sleep and have too much stress. A new Gallup poll revealed 57% of adults would “feel better if they got more sleep,” while 42% said they get “as much sleep as ...

Females sleep less, wake up more often and get less restorative sleep than males, according to a new animal study by University of Colorado Boulder researchers. The findings, published in the journal ...

Add Yahoo as a preferred source to see more of our stories on Google. Along with getting exercise and eating a nutritious diet, sleeping for 7-9 hours a night is at the top of every doctor's list of ...

Have you ever noticed how some people bounce out of bed after just a few hours of sleep, while others can barely function without a solid eight hours? Take Margaret Thatcher, for example. The former ...

Moms of school-age children get significantly less sleep during the school year than during the summer. We are economists who specialize in education and health research. We combined extensive data on ...

On dry nights, the San hunter-gatherers of Namibia often sleep under the stars. They have no electric lights or new Netflix releases keeping them awake. Yet when they arise in the morning, they ...

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. Australian researchers have uncovered a startling link between infant ...