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 ...

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 ...

Researchers trace how different sleep stages may fine-tune what we remember, trading specifics for more general knowledge.

Deep sleep earlier in life could be the key to keeping healthy cognition. The key to keeping your wits about you as you age may lie in shut-eye during midlife. A study found that people over 60 who ...

Sleep Cycles: One rapid eye movement (REM) stage and three non-REM stages that altogether last about 90 to 120 minutes Benefits: Physical and mental recuperation and memory consolidation Disorders: ...

Your body goes through four stages of sleep — here's how to extend the deep sleep phase for optimal memory processing and ...

Sign up for CNN’s Sleep, But Better newsletter series. Our seven-part guide has helpful hints to achieve better sleep. When jolted awake by the blare of an alarm ...

While the Inspire HR is still a solid choice, the Inspire 3 has made upgrades when it comes to sensors, display, battery life ...

It’s not exactly news that sleep is an important part of health. It’s also not exactly news that many of us struggle to get enough. Whether it’s because of a busy schedule, insomnia or feeling ...