Me, no. Any exam that is timed to a few hours or less certainly puts me in the state that I must rush things. When I rush things, logic doesn't flow through my head the way I want it to.

Like take my number theory exam. I knew all the answers to the questions, because they were EXACTLY THE SAME AS THE HW, but because I only had 1hr to do them, I rushed my logic. As I rushed my logic, some of my proofs were worded incorrectly. I hope my professor will be in a similar state and give me full credit because he feels rushed to grade them and not notice any minor miswordings. Exams are worth so much of your grade, but they take only a few hours out of an entire semester that bad-test takers can suffer.

I never liked the idea of exams being weighted so much, but eh. I swear, no matter how much I study for something, sometimes I end up doing poorly despite knowing the answers.