Ok guys.. Been power lifting sense early 20's, now 45 & arthritis in neck & shoulders has given me a reality check. I want to add muscle size & do more bodybuilding. My question is... should I stay with higher reps & shorter rest? Would it be better to do sets of 6-8 reps at 60 sec, or should I do sets of lighter weight for10-12-15 at 60 sec? Im using bench pressing as my example.