REM stages and one REM stage. Ideally, you repeatedly cycle through each stage. Learn how long each stage lasts.

Research reveals how specific sleep stages protect brain vulnerable to Alzheimer's, offering hope through simple lifestyle changes THAT anyone can implement ...

Earlier studies have identified a relationship between sleep and Alzheimer’s disease. A new study looks in detail at sleep phases, brain changes, and Alzheimer’s disease. According to the results, ...

How changing your sleep position can eliminate pain, improve breathing, and enhance rest quality. Learn the benefits of 5 ...

Doesn't seem like much of an issue, right? The woman has something called delayed sleep phase syndrome, and it puts a strain on her relationship because the young man she's dating has difficulty ...

Here's what you should know about your sleep cycle. Stages of the sleep cycle Your body cycles through two phases of sleep: rapid eye movement (REM) and non-rapid eye movement (NREM). These phases ...

“Many people focus on the deeper sleep phases as they believe these are the stages best for you as you are in a deeper sleep state,” explains Alison Jones, a sleep expert from leading mattress ...

More rarely, individuals may develop circadian rhythm disorders such as Delayed Sleep Phase Syndrome or Advanced Sleep Phase Disorder. Am I a morning person or a night person? Created with Sketch.