When you buy through links on our articles, Future and its syndication partners may earn a commission. Credit: Getty Images There are tell-tale signs when you don’t get enough REM sleep. It’s the ...

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 ...

Scientists are providing a fuller understanding of the essential role that sleep plays in brain health, identifying an abrupt transition at about 2.4 years of age when its primary purpose shifts from ...

Q. How do sleep disorder centers evaluate patients? A. Among the tests used by accredited sleep disorder centers is overnight nocturnal polysomnography. This test consists of videotaping and ...