How do you relax after a hard exam?

I like to go out with my friends after an exam, and I think it is a nice way to relax. Last time I had a hard exam my best friend and I went to coffeeshop in the afternoon. I passed the exam, but my friend didn't. She was very sad, I tried to comfort her and we talked for a several hours. Her experience ruined some of my own joy, and I thought that it was unfair, because she had studied more than me. In the evening I went out for dinner with another friend. We had a nice evening, it was pretty quiet, we just talked and had something nice to eat.