People who use alcohol as a sleep aid often wake up feeling tired, groggy, or unrested due to disruptions in their sleep architecture, including reduced REM sleep, frequent awa ...

Discover what causes sleep talking, whether your nighttime chatter reveals hidden secrets, and how to reduce these nocturnal ...

Dogs, like humans, go through several sleep cycles—wakefulness, rapid eye movement (REM) sleep and non-rapid-eye-movement sleep. In the REM sleep period, the most memorable and vivid dreams occur.

Discover how sleep influences physical and mental health, improves daily performance, and helps prevent chronic conditions.