TweetThe subject says it all...strength wise I feel OK, but as far as sheer muscle mass is concerned, it is by far the most underdeveloped. Specifically, I concerned about the lateral half of the muscle, with emphasis to be place on the lower pec area.

Currently, I'm doing 4 sets of flats, 3 sets of inclines, 3 of declines and either dumbell flyes or cables. Usually keep the reps in the 6-10 range, working out around 70-75% of my one-rep max.

Any input from the experienced masses here would be greatly appreciated regarding additional (or substituting) exercises to help bring this muscle group up to speed.

Thanks in advance.