New Study: Lack of Sleep Hurts Students’ Grades

Every additional hour of average nightly sleep early in the semester is associated with an 0.07 increase in end-of-term grade-point average, according to study published this week in Proceedings of the National Academy of Sciences.

The study was of 600 college freshmen at three private universities.

“Total nightly sleep is a potentially important and underappreciated behavior supporting academic achievement,” the study says.