On an Apple Watch, "core sleep" is another name for light sleep, which scientists also call stages N1-N2. It is not a type of ...

Sleep deficiency is associated with atrophy of the inferior parietal region of the brain, according to a study published online March 31 in the Journal of Clini ...

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

For more on the nature of sleep, go here.] Scientists believe that dreaming plays a role in the consolidation of memories, ...

If you're on the fence about the best sleep masks, know that there are two types of sleepers in this world: Those who can ...

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

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

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

A good night's rest isn't just about waking up refreshed — it plays a critical part in preserving your mental sharpness as ...

Not spending enough time in the two deep stages of sleep may hasten the deterioration of parts of the brain associated with Alzheimer's disease.

Researchers from the Yale School of Medicine found that individuals who spend less time in slow-wave and rapid eye movement (REM) sleep had smaller volumes in brain regions linked to Alzheimer's. This ...

To find the best CBD for sleep, we tested over 100 CBD oils, gummies, topicals, and capsules. Based on expert and tester feedback, we selected these eight as the best CBD products for sleep.