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

Mar. 11, 2025 — For people with a certain sleep disorder, a simple blood test could help predict the development of dementia years before symptoms appear, a new study indicates. Idiopathic REM ...

Hallucinogens like DMT, psilocin, and LSD might rewrite the rules of sleep, blurring the line between dreams and reality.

Sleep quality matters more than quantity. Learn why you might still feel tired despite getting eight hours of sleep and how ...

For the next in our series of conditions GPs might rarely encounter, Neurology consultant Dr Clare Bolton provides an ...

During REM sleep, breathing becomes faster and blood pressure and ... with a doctor if they experience chronic sleep troubles ...

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

Parkinson’s disease affects much more than movement, with non-motor symptoms like sleep issues, cognitive decline, and autonomic dysfunction often appearing years before physical signs., Health News - ...

A good night's rest isn't just about waking up refreshed — it plays a critical part in preserving your mental sharpness as you age. The role of sleep quality ...