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

For the next in our series of conditions GPs might rarely encounter, Neurology consultant Dr Clare Bolton provides an ...

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 ...

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

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

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

Deep sleep is the restorative stage of sleep. During this stage the body undergoes tissue repair, the immune system is ...

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 ...

What if we didn't need sleep to dream? Well, scientists may have found a way to hack those benefits even when you're awake.