A study of the sleeping patterns and transcripts of 111 college students found that those who regularly pulled all-nighters had lower GPAs. Side effects of sleep deprivation included delayed reactions and tendencies to make mistakes.
Nonetheless, two-thirds of the students participating in the study reported that they had pulled at least one all-nighter during the semester in question.
In general, according to the study’s author, college students' sleep is inadequate, irregular and of poor quality, all of which result in worsened academic performance. Over-use of caffeinated beverages and poor time-management also contribute to students' sleep deprivation.