This is an archived article and the information in the article may be outdated.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 ...

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: ...

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 ...

Sleep apnea is a prevalent sleep disorder that affects millions of individuals worldwide, yet it often goes undiagnosed and untreated. This condition not only disrupts sleep patterns but also poses ...

Sign up for CNN’s Sleep, But Better newsletter series. Our seven-part guide has helpful hints to achieve better sleep. Baland Jalal lay in bed terrified ...

Explore 10 interesting human brain facts, its structure, functions, and importance to learning, memory, behaviour, and exam preparation.

World Sleep Day is observed annually to emphasize the importance of quality sleep and raise awareness about sleep-related ...

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, ...

(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 ...