Rapid eye movement, or REM, is a stage of sleep in which you’re most likely to dream. Your heart rate, blood pressure, and even temperature might rise in this phase – and your eyes, well, rapidly move ...

Light sleep is the beginning of your sleep cycle and your body's way of winding down. Breathing, heart rate and muscle changes prepare your body for the deeper sleep to come. Light sleep is broken ...

People report vivid dreams during rapid-eye-movement sleep. But is this sleep stage really the only time we dream? When you purchase through links on our site, we may earn an affiliate commission.

REM sleep behavior disorder, or RBD, is a condition that causes abnormal movements or brief repeated twitching during sleep, and occasional episodes of dream enactment. RBD affects more than one ...

RBD is marked by loss of REM sleep atonia, leading to physical dream enactment. Polysomnography is essential to confirm RBD and rule out other disorders. Idiopathic RBD is a strong predictor of ...

MINNEAPOLIS — Obstructive sleep apnea, a condition that causes lower oxygen levels during sleep, is linked to degeneration of brain regions associated with memory through damage to the brain’s small ...

A new study shows that even a moderate dose of caffeine alters brain activity during sleep, increasing complexity and nudging neural systems toward a high-efficiency processing state, especially in ...

ATS 2025, San Francisco – During REM sleep, the body enters a state of paralysis. This can pose a danger for patients with weakened diaphragms due to neuromuscular diseases. Now new research published ...