She stays up late, by herself, watching television in her room.

We used to stay up late at night and imagine the day when we'd get to do this stuffing.

"I need permission from my son to stay up late?"

Now, nine months later, the little girl still stays up late.

At dinner that night, she allowed her son to stay up late.

His parents have given him no arguments about staying up late.

"I think there's a cultural bias against people who stay up late."

He stayed up late after everyone had gone to bed.

She stayed up late at work and cared more about the patients than everyone else.

But even the scientists who stay up late by profession never quite get used to what they see.