When you don’t get enough sleep, your whole body can feel off. In college, I tried to fit everything into my schedule, including staying up late to study and waking up early to train for a marathon. I ...

If you’ve ever felt tired after a full night’s sleep, you likely didn’t get enough deep sleep. This stage of sleep is considered to be the most restful, so getting enough of it is key for your overall ...

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 enough of it.

While some couples might sleep soundly together, for others, sharing a bed is anything but harmonious, especially for those with differing sleep styles. A restful night can be thwarted by tossing and ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Sleep may be the foundation of health, but there’s a lot of confusion around it. How much to get? How to ...

Sign up for CNN’s Sleep, But Better newsletter series. Our seven-part guide has helpful hints to achieve better sleep. You’ve heard the rule: No TV before bed ...

From babies who cry through the night to teens who sleep all morning to older adults who just can’t seem to catch any z’s, sleep patterns and the amount of sleep you need change throughout our lives.

Colino is a contributor for TIME. Colino is a contributor for TIME. In a culture that’s highly goal-oriented, yet another form of performance anxiety has emerged: It’s called orthosomnia, and it ...

It’s common to experience decreased quality of sleep as you age, and it can be distressing. Here's what you can do to help you sleep better ...

The middle of the night used to be my special time. I’d use it to cram for a test, read a mystery, or play Candy Crush—with no one around. As I got older, those nighttime hours became time to answer ...