I saw this guy in the weight room today with huge guns probaby a good 20 inches on a 180 pound frame. I asked him what he did for biceps. He said one exercised really helped. Single arm dumbell curls, but instead of keeping his arm parrellel to his side he twists his arm outward. Kinda hard to explain. Basically twist shoulder joint and point elbow towards your side. You kinda feel a muscle pull when you do it. he said it cuts down on cheating and really targets just your bicep. Has anyone evr heard of this? Or done it? I figure I will try it.