My left pectoral is lagging behind my right in overall mass but mostly in the lower left part of the muscle.
I have tried dumbells and barbells to correct the imbalance, and now I simply do 2-3 sets of one arm presses and flyes at the end of my workout to give my left side a little extra isolation.
My left side is growing, but I need something better. What would you reccommend to correct this imbalance? and what exercise is best for developing the lower outside portion: decline db presses or decline flyes??