I'm doing 5/3/1 and love it, I'm on my third week of the first cycle. I've had new PR's each week, so it works well.
Here's the question though, should I or could I add in some bicep work?
Currently, my forearms are 12" and biceps are 13.5" which seems a little disproportionate to me. I'm wanting my upper arms to be proportionately bigger than my forearms, in short.