In the quiet hours of the night, while your body rests, your brain is busy. It's sorting through the day’s moments, filing ...

KyoungBin "Kevin" Im, MD, MS, associate clinical professor and sports psychiatry services medical director at UC Irvine ...

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

(That’s the thing where they attach wires to your head). Scientists recognize three stages of non-REM sleep, with the third being described as deep sleep. That means stages 1 and 2, which are ...

Overall, REM sleep occupies about one-fifth of total rest time in adults. Yet stages 1 through 4 have been labeled as non-REM sleep, or NREM—80 percent of sleep is defined by what it’s not.

Lucid dreaming, where people become aware they are dreaming, has long fascinated both scientists and dreamers.

Researchers may have found a way to get the benefits of sleep through artificial naps, but the research is far from complete.

A power nap has long been touted as a magic reset button for the brain—but what if you didn’t need to sleep at all to feel ...

Around 70% of college students report getting less than eight hours of sleep a night. With looming deadlines, buzzing social ...

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

One sleep cycle is made up of three non-REM stages and one REM stage. The deepest sleep is the NS stage where it is hard to wake someone and muscle tone, pulse, and breathing rates decrease.