Pink noise emphasizes lower frequencies — making it sound similar to steady rainfall or ocean waves. It’s often used for sleep.

Published last week in the medical journal Sleep, the study found that the presence of pink noise at night reduced REM (rapid eye movement) sleep – the stage when most vivid dreams occur and memory, ...

REM stands for rapid eye movement — a stage in the sleep cycle when your brain is almost as active as when you’re awake. Getting enough REM sleep is crucial, as it helps you store information and ...

Eugene Aserinsky never wanted to study sleep. He tried being a social worker, a dental student, and even did a stint in the army as an explosives handler. He enrolled at the University of Chicago to ...

One study suggests that taking longer to reach the rapid eye movement (REM) stage of sleep is associated with biomarkers of Alzheimer’s disease. The delay in getting to REM might be useful in ...