When I do my back exercises, back press and front press, my forearms usually get very stiff and pain a lot. Hence, I feel I can't exercise my back enough since my forearms fail much before my back does. I never do exercise my forearms. Do you think that this might be the reason that my forearms fail before back? The same kind of scenario happens when I do abdomen exercises. My back fails before my abs? What should one do in such scenarios? Change ones rountinue or exercise more of the muscles that fail?