But how do sleep cycles work? To find out, I took part in a polysomnography. This is a gold standard sleep study that helps ...

Most people spend a third of their lives sleeping, but you may need more or less than eight hours a night. The amount of ...

Is the much vaunted eight hours of sleep enough to avoid health issues? Experts discuss why its important to wake up feeling ...

The human body does not like to stall between ... Stage 2 can last up to 50 minutes during the night’s first 90-minute sleep cycle. (It typically occupies a smaller portion of subsequent cycles.) ...

Light plays an important role in regulating our sleep/wake cycle, and our bodies are ultra-sensitive to it. As a result, the ...

I wasn’t sleeping well, so I took Thorne’s Sleep Test to uncover the cause. Here's what I learned about my out-of-whack ...

With daylight saving time fast approaching, our sleep cycles are about to get thrown for a loop. But don’t panic — you don’t have to rely on pharmaceutical sleep aids that leave you groggy ...

That said, wolves can show high variability in their activity, with human disturbance, food availability and weather conditions all influencing their sleep-wake cycles. Captive wolves, like dogs, ...

Humans cycle through sleep stages roughly every 90 minutes. In the first portion of the night, Atwood said that more of the cycle is slow wave sleep, or deep sleep, which is essential to repairing ...