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

Need another reason to prioritize your sleep? Not spending enough time in the two deep stages of sleep may hasten the ...

Hallucinogens like DMT, psilocin, and LSD might rewrite the rules of sleep, blurring the line between dreams and reality.

Sleep deficiency is associated with atrophy of the inferior parietal region of the brain, according to a study published online.

HOUSTON — A good night’s sleep is important for both the body and brain. It’s essential to understand the four stages of ...

People on TikTok and other social media say they feel more alert when they have had fewer hours of sleep—but sleep scientists ...

New research shows that reduced time in slow wave and REM sleep is associated with smaller brain volumes in regions ...

New research reveals that lower proportions of specific sleep stages are associated with reduced brain volume in regions ...

As most people who have pulled an all-nighter will agree, lost sleep can leave us feeling foggy and far from our best. In ...

A study published in the Journal of Clinical Sleep Medicine explores the association between sleep architecture and brain atrophy in regions vulnerable to | Neuroscience ...

Oxygen re-saturation during sleep is significantly affected by sleep stage and by cardiovascular and pulmonary comorbidities.

The best sleep position depends on comfort and health conditions. Side and back sleeping are generally considered the ...