Humans sleep at night in order for the body to recover from the activities of the previous day. It also keeps our minds and bodies healthy. Sleep deprevation can be a serious problem if not monitored
He sleeps at night
The devil sleeps at night.
No it sleeps
At night
it sleeps in night
Sleeps underground
He is sleeping night after night, why would he be tired?
A man who never sleeps at night, yet everyone remarks about how wide awake and competent he is, is a night watchman!
Women
The sun
Traditionally fictional vampires eat at night and sleep in the day
A gorilla sleeps at night and is active during the day.