I'm a fourth year medical student. In college, I was the president of my sorority. Good time management skills will be your best friend - that, and a house full of understanding sisters.
The night before I took the MCAT was the sorority formal. The girls came home in the wee hours of the morning and
tiptoed through the entire house, scolding each other every time their voices went over a whisper, to make sure they didn't wake me up before such an important test. Or at least that's what they said they did - I slept like a baby, so I couldn't tell you!