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

"Deep sleep builds your immune system, and REM sleep regulates and fine-tunes it," says Darwall-Smith agrees. During deep ...

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

As part of a full night’s rest, we cycle through four stages of sleep several times. This includes three stages of non-REM sleep and one stage of REM (dream) sleep. Each cycle takes around 90 to ...

Drinking alcohol before bed raises blood alcohol content, which disrupts rapid eye movement, or REM, sleep, a critical phase ...

Sexual activity—whether partnered or solo—improves sleep efficiency and reduces night-time wakefulness, according to a pilot ...

But following a night of sleep, the sequence becomes unitized ... effective integration of these memories probably takes several NREM–REM cycles or multiple nights before optimal representations ...

I've been using the Sleep Cycle app for a few months now and I love it. It wakes me in between REM sleep cycles so the alarm isn't as jarring and I feel better rested. Follow BI Video: On Twitter ...

REM sleep behavior disorder is characterized by acting out dreams, which may include shouting, kicking and punching during ...

It’s also when “growth hormone” is released. In the latter hours of the night, more of the sleep cycle is spent in rapid-eye movement sleep, or dream sleep, which is important for learning ...