Thanks everyone for the input. So 20 lbs to gain 2.5" on the arms? That sounds doable given time. I also see that one response says 20 lbs to put on 1"? Please tell me that the number is the later, putting on 40 lbs of lbm would indeed be a chore!
I don't really think I suffer from bad arm...
Ok, first post everyone and howdy to all. You've probably seen this type of post a zillion times but please bear with me. A little background first. After quite a few years of ups and downs I got sick of the downs and started weight training again about six months ago. I'm making decent progress...