The chest and arm muscles are rarely used. He injured his muscular fibers by lifting weights. Cytokines were released, causing the muscle to bulk up and seem larger. He didn't add any new muscle tissue.
Even if you've had surgery to eliminate some of your tissue, you still have breasts. However, some individuals like to say that have breasts, while others usually say they have chests. Both terms may be used by some persons.
This is the origin of the word "chest," which means "box or coffin" in Old English. The idea that now the ribs create a "box" or "chest" from around internal organs gives rise to the anatomical significance.
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