We eat,play majiang,stay up later and chat.

我们吃美食，玩麻将，谈笑到很晚。

youdao

If you don't ritualize a specific bedtime, you'll end up finding ways to stay up later, just the way you do now.

如果你不养成固定时间上床睡觉的习惯，你就会想办法熬夜，就跟你现在做的这样。

youdao

I can easily stay up later than my normal range of bed times if I work, go out with friends, or do other stimulating activities.

假如我在晚上工作忙碌或者和朋友们一起出去玩，又或者是做些刺激性的活动的话，我入睡的时间比往常都要晚很很多。

youdao

I like to stay up until midnight or even later on my natural clock.

我很喜欢熬夜,一直到午夜或者更晚,这是我的生物钟。

普林斯顿公开课 - 国际座谈会课程节选

When people fly west, they have to stay up later before going to bed.

WSJ: To Avoid Jet Lag This Summer, Travel Like a Scientist

Sleep changes dramatically after puberty: Circadian rhythms shift so kids naturally stay up later.

WSJ: How Much Sleep Do Children and Teenagers Need? Grown-Up Problems Start at Bedtime

Naps also help when you know you're going to have to stay up later the same night.

CNN: Sleep tips for the road-weary