best way to hit lower chest for growth

[BodybuildingUniverse]

I have to say that I think Francos upper/lower chest seperation was pretty genetic, just like the peak in Boyer Coes bis and the calf seperation of someone like Roger Stewart. He did the same things most of us do but just had that killer crease between muscle groups...

 

[Robboe]

franco = genetic wonder.

 

[Cackerot69]

I don't think anybody argues that there is an anatomical separation between the upper and lower chest. The point I and a few other intelligent people here argue is that both parts function as a single unit, cannot be separately targeted short of breaking your neck and severing the innervations, thus for all practical purposes is a single muscle.

 

[sysopt]

I have a huge ass crack in both of my biceps. I didn't do any special training to make one head larger than the other, it just came out that way.