I would say draw weight is the key to longevity. The older you get the weaker you may get, and then you need to adjust accordingly. I still pull 70+ # at 33 yrs old, and will continue to do it as long as I don't hurt or can do it with ease. As a former powerlifter/bodybuilder/ fat slob now, I can tell you that working out is a + for archery, but lifting heavy weights like I did is stupid. When i was 23 yr old I could bench 380 lbs for a one rep max at 180 lbs of body weight. I used to do 650 lbs shoulder shrugs with the straight bar. I used to do 3 sets of 6 of 285 lbs on the bench for my mass program and then work down to a 3 rep routine for strength. People in the gym used to look at me and swear I was on roids but I never took them.My point......what does that matter now??? Nothing but back ache/neck pain/ and joint aches.... pull it if ya can, but don't push it.