I have been lifting hard for about a year and I feel all I do Is read up and learn different techniques to gain muscle mass when working out I have been it is all in the reps and sets and not in wheight and I have also heard it the other way around. So what I am wondering in order to gain mass what reps/sets and rest periods should I be doing
As of right now I'm doing 3-4 sets and 12-15 reps and about 6-8 different workouts for chest
So