"I have to get my deep REM sleep," expresses a common confusion about two very different types of sleep. Deep sleep and rapid eye movement (REM) sleep are not the same; they do not even overlap. They ...

AI system predicts risk for 130 diseases from one night's sleep with up to 85% accuracy. Sleep patterns show hidden health ...

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 ...

Each morning, your brain embarks on a remarkable series of events: it transitions from being asleep, potentially in an alternate reality, to waking up. Within a short time, you regain waking ...

Any sleep tracker will show you that slumber is far from a passive affair. And no stage of sleep demonstrates that better than rapid eye movement, or REM, commonly called dream sleep. “It’s also ...

A new study has found a link between rapid eye movement (REM) sleep and Alzheimer’s disease. The research from China, published in the journal Alzheimer’s & Dementia by the Alzheimer’s Association, ...