The eyes may be ... depending on how much someone sleeps. Sleep is also the time when the body does most of its repair work, muscle tissue is rebuilt and restored. We know, too, for example ...

Here's what you need to know about getting too much sleep ... get seven to nine hours of sleep each night on a regular basis. "That said, only a few people can do with less than five hours ...

Napping is a double-edged sword. Done right, it’s a powerful way to recharge the brain, improve concentration, and support ...

and that both too much and too little shut-eye could be linked to diseases like dementia. The study looked at more than 100 sleep studies of a total of around 110,000 people. Nearly three quarters ...