I made a thread earlier, but there was like one response so I decided to change my question.. If I'm doing 10 reps.. And about 15+ sets for a muscle (depending). Do I still go to failure? And will doing 10-12 reps increase my size? Will it still reasonably increase strength? If I chest press 45 x 10 will I be able to do 50 x 10 within a week or will it only increase size? Also, if I'm doing 10-12 reps what's the difference between 10-12 and my old rep range, 6-8? Was I only increasing in strength and no size before?