too many guys get all paranoid and caught up with this muscle's workout interfering with that muscle, training this muscle after a day of rest, before a day of rest and on and on and on, problem is that you get to the point where you're just overthinking it, just don't over rely on too many pressing movements, too low a rep scheme, try out different rep patterns and ADD IN DB AND MACHINE FLYES, too many people these days are caught up in the whole Ronnie Coleman type of chest training doing all heavy pressing movements but heavy flyes are at least as important if not more so because they train the pecs in the way they were designed to work by drawing the hands in and across your torso, do two pressing movements and two flye movements and like Pumpster always says experiment with different rep ranges and spend a lot of time in that 8-12 rep range, i really like 6's and 8's too.