Learn facts about sleep, during which the body rests, recuperates and performs essential repairs. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works.

Nature gave us sleep as the ultimate reset button, but how much people actually get varies widely by country. While sleep ...

REM stands for Rapid Eye Movement and it’s seen as the deepest stage of the sleep cycle. As the name states, REM sleep is ...

What if the key to living longer was simply getting good sleep? A new study offers a surprising insight by placing sleep ...

Everyone has heard that it’s vital to get seven to nine hours of sleep a night, a recommendation repeated so often it has become gospel. Get anything less, and you are more likely to suffer from poor ...

Delayed sleep phase syndrome (DSPS) is a most prevalent circadian rhythm sleep disorder and is marked by a delay in the timing of sleep episode compared to desired or necessary sleeping and wakeup ...

In jellyfish and sea anemones, neurons accumulate DNA damage while animals are awake and repair that damage during sleep.