Sleep is one of those things everyone does but rarely thinks about. Most people climb into bed, close their eyes, and wake up hours later without wondering what happened in between. But sleep is far ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. Marianne Murciano, Bob Sirott’s wife and ...

Many people who experience sleep paralysis see frightening hallucinations some call "sleep paralysis demons." - Illustration by Leah Abucayan/Alberto Mier/CNN Baland Jalal lay in bed terrified, ...

Many people believe that remembering their dreams means they had a good night's sleep. That's not necessarily the case, says Ariel Garten, co-founder of Muse, a neuroscience and meditation company.

When a person is asleep, their core body temperature drops. Heart rate and breathing also slow down and overall metabolic activity decreases by about 10%. A sleeping body may seem inactive at first ...

The advertiser paid a fee to promote this sponsored article and may have influenced or authored the content. The views expressed in this article are those of the advertiser and do not necessarily ...

Sleep is not just a period of rest, but a crucial function for our body’s health and wellbeing. It’s a time when the body repairs itself, the brain consolidates memories and vital hormones are ...

1. Recent research from the RAND Corporation estimates that the lack of sleep among workers costs the U.S. economy up to $411 billion per year (2.28% of GDP), due to individuals' lower productivity ...

(CNN) — Baland Jalal lay in bed terrified, experiencing his own real-life horror film. Newly awake, the 19-year-old could see his surroundings but couldn’t move or speak, and he didn’t know why. He ...

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.

(CNN) — Sign up for CNN’s Sleep, But Better newsletter series. Our seven-part guide has helpful hints to achieve better sleep. (CNN) — Sign up for CNN’s Sleep, But Better newsletter series. Our ...