I enjoy smoking. Before med school, I could make a pack last 2.5, almost 3 days. Now I smoke a pack within 36 hours. I can't say it's the stress, though. It's no more than what it was in college. Maybe a tad more, but not enough to warrant a jump in smoking almost two-fold.
I have histology as my first class in the morning, which is an absolute drag. So I brought some Stoli in a water bottle and chugged it at the security gate and threw the bottle away. Kinda overshot my range for staying buzzed. Went through three classes with my head against the wall.