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

It's no secret that a good night's sleep is key to a healthy brain. However, the full extent of the importance of rest on our ...

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 ...

In stage 3, delta waves are present less than half the ... But it’s not a coma-like state, as in stage 4. Our brain during REM sleep is fully active, guzzling as much energy as when we’re ...

The brain waves of a person in REM sleep look very similar to those of a person who is awake, which is why some sleep-tracking apps show blocks of REM as occurring near the top of the graph ...

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

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.

Scientists have made significant strides in developing 'artificial naps' through brain stimulation, aiming to replicate the ...

Need another reason to prioritize your sleep? Not spending enough time in the two deep stages of sleep — slow-wave and rapid eye movement, or REM, sleep — may hasten the deterioration of parts ...

Heart rate, breathing, and brain waves become more regular. Stage 3 is also called slow-wave sleep. Stage 4: This stage is also called rapid-eye movement (REM) sleep due to the movement of the eyes in ...