What are your thoughts on the debate over whether a certain portion of a muscle can undergo hypertrophy from a particular range of motion?
For example, does doing Incline BBL Bench Press work the upper portion of your pectoral more than, say, Flat bench?
I'm starting to question the science behind the assertion that you can't shape a muscle. After I stopped doing incline presses (for a couple years) I seem to be lacking development in the upper pectoral region - but the lower and outside edges are growing nicely.
So is a muscle shaped purely through genetics or is there a training component as well?