Deep sleep refers to slow-wave sleep — a stage in the sleep cycle when brain waves slow down. Getting enough deep sleep is crucial for numerous bodily functions. But how to increase deep sleep isn’t ...

Few experiences rival the calm satisfaction of falling asleep easily and waking up feeling fully rested. But sleep is more than a luxury or idle downtime, it’s a vital biological process that supports ...

You’ve heard of REM sleep but what about deep sleep? Experts share why it’s important and how to make sure you’re getting ...

If you use a sleep tracker at night, these are the three metrics you should be paying attention to in the morning.

Getting enough sleep is easier said than done — that's where napping comes in handy. Whether you're looking to catch up on rest after a sleepless night or relax in the afternoon, napping is an ...

Past studies show the ‘boost’ the brain receives from physical activity normally peaks within the first 10 to 20 minutes. Researchers from University College London have now found that the ...

Sleeping for 7 to 9 hours at night isn't the only way to catch some z's. Here are four alternative sleep cycles -- and they're pretty obscure. Annie Miller Medical Reviewer Annie Miller is a licensed ...