Good Sleep's climate control system tackles this by circulating temperature-controlled water through a mattress topper that ...

Light sleep is the beginning of your sleep cycle and your body's way of winding down. Breathing, heart rate and muscle changes prepare your body for the deeper sleep to come. Light sleep is broken ...

Any sleep tracker will show you that slumber is far from a passive affair. And no stage of sleep demonstrates that better than rapid eye movement, or REM, commonly called dream sleep. “It’s also ...

How much sleep adults need ranges from seven to eight hours in general (some people need more or less). However, general ...

On a December evening in 1951, Eugene Aserinsky, a physiologist at the University of Chicago, placed electrodes on the scalp of his 8-year-old son, Armond, before putting him to bed. Then the ...

Sleep latency, or sleep onset latency, is the time it takes for you to go from being fully awake to sleeping. Sleep latency and the time it takes to reach rapid eye movement sleep (REM sleep) are ...

"I have to get my deep REM sleep," expresses a common confusion about two very different types of sleep. Deep sleep and rapid eye movement (REM) sleep are not the same; they do not even overlap. They ...