HOUSTON — A good night’s sleep is important for both the body and brain. It’s essential to understand the four stages of sleep and how to get more restful z’s. Stage 1: Transitional sleep The sleep ...

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 ...

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.

MANILA, Philippines — Did you know that one of the four stages of sleep helps regulate emotions, and if it is not achieved through it, it could be the reason why you wake up cranky? It has been said ...

Sleep is key to brain and body function, memory, physical performance, preventing chronic disease and improving mental health ...

Have you ever slept for a full eight hours but still felt completely exhausted? You might not be getting enough of the right types of sleep. Today, many people use smart watches or rings to track ...