burn out
extreme tiredness usually caused by working too much.
calm down
to stop feeling upset, angry, or excited, or to stop someone feeling this way.
chill out
to relax completely, or not allow things to upset you.
doze off
If you doze off, you start to sleep, especially during the day.
perk up
to improve or become more exciting.
race off
go quickly
sleep over
to sleep in someone else's home for a night.
turn in
to go to bed.
drift off
to gradually start to sleep.
drowsy
being in a state between sleeping and being awake.
sleepless
without any sleep / not able to sleep
nap
a short sleep, especially during the day.
toss and turn
to move about from side to side or turn a lot in bed, especially because you cannot sleep.
