I have a question, No matter what I do I can't seem to increase my bicep strength. I've been solidly working out for 3 years and have hardly seen a strength increase. I've gained plenty of mass but hardly any strength. I have a friend whom I can about double his squat and deadlift as well as 75 more bench and whom my triceps are monstrous by comparison but his Bi's can curl about 30 more pounds then me. I'm assuming that's genetic but I would like to increase the strength of them. Anyone have a favorite strength exercise for them?