REM stages and one REM stage. Ideally, you repeatedly cycle through each stage. Learn how long each stage lasts.

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.

Stage 4: This stage is also called rapid-eye movement (REM) sleep due to the movement of the eyes in this phase. During REM ...

Deep sleep is the restorative stage of sleep. During this stage the body undergoes tissue repair, the immune system is ...

Infant sleep patterns fluctuate significantly during the first year, with newborns sleeping in short bursts and gradually ...

Night terrors aren't uncommon, but they are really difficult for adults to see. When my son had sleep terrors, I had to ...

The Rapid Eye Movement (REM) stage is marked by quick movements of the eyes, increased activity in the brain and vivid ...

“These results are particularly significant because they help characterise how sleep deficiency, a prevalent disturbance ...

During deep sleep, the brain sweeps out toxins and dead cells while also repairing and restoring the body for the next day. While we dream during REM sleep, the brain is busy processing emotions ...

the proportion of REM sleep, and how often they experienced arousal during the night. The scientists found that having less slow-wave sleep was associated with a smaller inferior parietal region ...