hey everyone, ive been working out seriously for almost 2 years now, but im lacking on some parts of my body such as my back and arms, everything else looks good, i just have a really scronny back and arms haha. anytime i train my arms i only get a pump, by the end of my workout out i feel like i can go and do it again, i have tried everything from reps 6-8 or 8-10 with a bunch of different exercises but no matter wat i do i cant seem to kill them as much anymore, any suggestions? i tried a wieght gainers before fr putting mass but that shit just adds to ur belly mostly