According to this answer, it seems as though staying up late is somehow a correction for Bnei Yisrael sleeping late. I've heard it explained that they thought nevua would only come while they are ...
In a fascinating article , Elliot Horowitz credits the introduction of coffee for the spread of the custom of staying awake at night. In the 15th century, the drinking of coffee originated in Yemenite ...
Should females remain awake the night of Shavuos? (sources please)
Suppose everyone in the Shul remained awake the whole night of Shavuos. What do you do regarding Birchas HaTorah?