to enjoy staying awake all night
be a night owl
to usually get out of bed in the first part of the morning
be an early riser
to go to sleep very quickly because you are very tired
be out like a light
keep opening their mouth wide and breathing in deeply because they are tired or bored
can't stop yawning
to stay in bed longer than usual in the morning
have a lie-in
to have a short sleep during the day
have a little nap
to spend a night when you are unable to sleep
have a sleepless night
to begin to sleep, usually when you do not intend to and are sitting somewhere
nod off
to breathe in a very noisy way through your mouth and nose while you are asleep
snore loudly
to feel tired and confused after flying a very long distance,, especially when there's a big time difference
suffer from jet lag
