REM stages and one REM stage. Ideally, you repeatedly cycle through each stage. Learn how long each stage lasts.

Bedtime routines aren’t just for toddlers. Experts say teenagers need them too. The Centers for Disease Control and ...

The Eight Sleep Pod 4 is a high-tech mattress cover that adjusts temperature to help you sleep cooler or warmer. It tracks ...

While melatonin supplements are popular, it's not always clear how much melatonin you should take. Here's what doctors ...

Children’s mattresses and bedding contain toxic flame retardants and other chemicals linked to hormonal, reproductive and ...

Coziness over sex appeal, says a sleep specialist to the 32% of American adults who have trouble getting a good night’s sleep ...

Sleep is an essential biological process known to contribute to both mental and physical health. In addition to supporting ...

For a good night of sleep, consider getting your circadian rhythm back in sync with the sun. Here’s how to do it.

Part of cortisol's impact is mediating the stress response — that fight-or-flight instinct that allows you to deal with ...

A new study of nearly 15,000 people found that the window of late-night workouts in which sleep is then impacted is actually ...