[bornbad71]

Some might not agree with me on this, but IMO you can't develop a inner or outer chest....they simple do not exist. The chest is made up of an upper and a lower. While you can squeeze and hold some movements at the top, or full contraction, it is still no way to isolate an inner portion of the chest. Work toward total developement of the pec major and minor.

I found this on the net and would like to share it with y'all........

The muscles of the chest, the pectorals, can be thought of as consisting of two main areas for the purposes of training, i.e. the upper and lower chest comprising the pectoralis minor and pectoralis major, respectively. Also involved in many of the pressing movements for the chest are the front deltoid muscles of the shoulder and the triceps of the upper arm. Stabilising muscles and muscles which rotate the scapulae (shoulder blades) are also involved. The upper chest is mainly targeted via movements done on an incline bench, while the lower chest is worked through flat or decline bench and parallel bar dip-type movements.