REM sleep, marked by rapid eye movement, is one of the most mysterious stages of our nightly rest, known for vivid dreams. This phase, repeating every 90 to 120 minutes, possibly prevents sleeping too deeply, making us less vulnerable.
REM sleep, marked by rapid eye movement, is one of the most mysterious stages of our nightly rest, known for vivid dreams. This phase, repeating every 90 to 120 minutes, possibly prevents sleeping too deeply, making us less vulnerable.