#sleep.physiological_state__slumber  a natural and periodic state of rest during which consciousness of the world is suspended; "he didn't get enough sleep last night"; "calm as a child in dreamless slumber"
  supertype:  physiological_state__physiologicalstate__physiological_condition__physiologicalcondition  the condition of the body or bodily functions
  subtype:  sleeping.sleep  the state of being asleep
  subtype:  orthodox_sleep__nonrapid_eye_movement_sleep__NREM_sleep__nonrapid_eye_movement__NREM  a recurring sleep state during which rapid eye movements do not occur and dreaming does not occur; accounts for about 75% of normal sleep time
  subtype:  paradoxical_sleep__paradoxicalsleep__rapid_eye_movement_sleep__REM_sleep__rapid_eye_movement__rapideyemovement__REM  a recurring sleep state during which dreaming occurs; a state of Rapid Eye Movements during sleep
  subtype:  shuteye  informal term for sleep

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