Wow, look at all the guys interested in going to OZ, its makes me realize how fortunate I am. I'm planning my 6th trip! Troy, main thing is not to strain yourself, that really puts you back. I think most of the guys that talk about hurting themselves tried to force to much to soon. One thing to remember is that ANY exercise benefits the whole body and even walking helps build your back and arm muscles. I keep a heavy bow strung all the time and whenever I think of it, I draw it slowly and hold it for a few seconds several times, BOTH right and left hand. I only shoot right handed, but you will develop faster and with less problems if you work both sides. Don't try to jump up in the higher weights more than five pounds at a time, I can say that the jump from 80 to 85 pounds is a BIG one. The good news is that after I shoot 85#'s for a while 80#'s feels like I could shoot 3D with it! Also after you work up to these heavy weights once, it is much easier to do it next time! Rick