Q: If you have gynecomastia, does it prevent you from gaining muscle on your chest. I have a small case of gynecomastia, and noticed that my inner chest isnt that developed. My upper is.

A: No, it should not affect your ability to gain muscle and in fact the gaining of muscle should mask gynecomastia quite a bit. For your inner chest, try close-grip bench presses (hands about shoulder-width apart or even a little closer). It's a tremedous tricep exercise that happens to hit the inner chest very well too.