Need some help guys...I've been working out for about 2 1/2 years and have a good idea how all the lifts work. I've managed to put on about 40lbs since I started, but for some reason my biceps just dont want to grow like they should....A normal routine looks something like:standing barbell curls four sets of ten,alternating dumbell curls four sets of ten,hammer curls four sets of ten,and preacher curls three sets of ten...I dont think I am going to heavy and my form seems to stay in check...I dont really seem to get a pump like I should. Any suggestions?