I have been making great gains all over lately but am having a major problem with my chest. I know that on most people, their dominant side will always have a tab bit large muscle size. However, my left chest muscle has become very noticeably smaller than the right. It can even be visially seen through a shirt. On chest workout days, the right pec with get hard and pumped, but the left feels as if I just woke up in the morning.
Why this happening and what can I do to get evened out?