REM (rapid eye movement) sleep is a stage of semi-deep sleep, often referred to as “paradoxical sleep,” and is "a state of sleep when brain activity shows similar patterns as being awake," says Wendy ...

Sleep generally falls into two categories: Rapid-eye movement (REM) and non-REM sleep. Not surprisingly, both types help the body restore itself. More surprising, though, is how little we truly ...

A good night's sleep is critical for our daily functions, including our mood and memory retention, as well as our immune system and heart health. However, scientific evidence suggests that lunar ...

Biphasic sleep simply means that instead of sleeping in one long stretch during the night (known as "monophasic sleep"), you break your snooze time into two distinct chunks. Also called "segmented ...

Most people think sleep is just downtime, but turns out your body is actually pretty busy while you’re sleeping. Your metabolism doesn’t just clock out when you fall asleep – it’s more like switching ...

A new study shows that sleep spindles, brief bursts of brain activity occurring during one phase of sleep and captured by EEG, may regulate anxiety in people with post-traumatic stress disorder (PTSD) ...