Hey thanks for the replies everyone! I actually forgot I started this thread

Anyway, my trainer and I have a suspicion that my hamstrings are way behind my quads, but I wasn't sure which group cycling worked the most. Not to mention the fact that I've been doing tons of quad work in physical therapy, but barely any hamstring curls because they hurt my knees (I only do 3x10 @ 50 pounds 2 days a week).

Does anyone know any good hamstring exercises (using weights) that don't involve this thing: