One semester I had only an hour and a half between classes and I lived hella far away from campus so I would use the down time to go to the graduate library and study for the following reasons: 1) NEVER ANYBODY THERE UNLIKE THE TWO UNDERGRADUATE LIBRARIES 2) soooo quiet 3) Surrounded by rare book collection 4) pretty to look at.

Other times I would use study rooms in the other libraries or get a study group somewhere I didn't have toys.