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

However, some research shows that major stressors may increase REM sleep but reduce deep sleep. REM rebound, which is when we ...

A new study reveals how the brain reprocesses and refines memories during sleep, particularly those related to spatial ...

Scientists and researchers generally divide the cycles into two broad categories: non-REM and REM sleep. I'm going to break down non-REM sleep into two further categories that are often used by ...

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.

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

Researchers sought to better understand the connection between REM sleep patterns in patients with either insomnia or MDD.

Researchers from ISTA discovered that sleep helps solidify spatial memories by reorganizing neuronal patterns. During non-REM ...

Dreams are a fascinating mystery – whether it was a terrifying nightmare or a vivid fantasy, most of us can still vividly recall at least one. Songs have been composed and scientific discoveries ...