to add muscle mass on myself how many sets/reps should i do. i have always heard mixed ideas. for about six months i have been doing - heavy weight- for example. flat bench- 100-110lb dumdbells 2sets-4-5reps - incline-85lb 2sets-4-5reps decline-85-90lb 2sets-4-5 reps. some guys say that thats not enough to make any gains and to easy to hurt joints if you can' get atleast 6reps its a wate of time for size but not strength training. do you agree? i did this workout setup on my cycle last summer and i put some size on everyone was like holy crap.. whether just being on the juice would have made me big whether i lifted that way or with more sets and reps i have no clue. i want to know the best way to add SIZE..