6 States of arousal: quiet awake, active awake, crying, drowsiness, active sleep, deep sleep

A. Excited awake, silent awake, laughing, alert, deep sleep, REM sleep
B. Still awake, restless awake, sobbing, sleepiness, light sleep, profound sleep
C. Tranquil awake, energetic awake, weeping, drowsy, rapid eye movement (REM) sleep, sound sleep
D. Calm awake, vigorous awake, wailing, drowsiness, deep slumber, serene sleep