Nous faisons souvent des nuits blanches.

English Translation

As often as not, we lay awake all night.

Nuits blanches can also refer to staying up all night to do something such as attend a festival.

I think the French tense (present) is wrong: lay is past tense of lie, so it should be faisions. I know many confuse the verbs lie and lay, and this may be such a case.