A
to open the mouth wide and take a deep breath usually as an involuntary reaction to fatigue or boredom
yawn
an overnight stay as at another's home
sleepover
walk around and sometimes perform other actions while asleep
sleepwalk
to sleep briefly especially during the day
nap
to go to bed or fall asleep
crash
(e.g.) I was so exhausted after the long day that I just crashed on the couch and fell asleep instantly.
a sleep disorder that makes people very drowsy during the day
narcolepsy
a frightening dream that usually awakens the sleeper
nightmare
A hormone produced by the body that helps to regulate sleep
melatonin
A temporary inability to move or speak while falling asleep or upon waking
sleep paralysis
to move around and turn over in bed while unable to sleep
tossing and turning
fall asleep, especially for a short period of time, and usually unintentionally
doze off
a condition that causes people to involuntarily grind their teeth while they sleep
sleep bruxism
to breathe during sleep with a rough hoarse noise
snore
a state of minimal activity and metabolic depression undergone by some animal species during winter
hibernation
a sleep disorder that causes breathing to stop or become shallow while you sleep
sleep apnea