non-REM sleep

{
  "id": "MLC-T-ONC-005916",
  "term": "non-REM sleep",
  "field": "Oncology and biomedicine",
  "definition": "The phase of sleep that is considered the quiet or restful phase. During the three stages of non-REM sleep, a person falls asleep and then moves from a light sleep into a deep sleep. This is when a person’s brain activity, breathing, and heart rate slow down, body temperature drops, muscles relax, and eye movements stop. Non-REM sleep plays an important role in helping the body repair tissues, build bone and muscle, and strengthen its immune system. During normal sleep, a person goes through four to five sleep cycles that last about 90 minutes each and include both non-REM sleep and REM sleep. Also called non-rapid eye movement sleep and NREM sleep.",
  "synonyms": [
    "non-rapid eye movement sleep",
    "NREM sleep"
  ],
  "references": [
    "NCI Dictionary of Cancer Terms"
  ],
  "url": "https://mlchart.com/terminology/oncology/non-rem-sleep/"
}