“Inner Chest, Outer Chest Upper Chest, Lower Chest…” Perhaps no muscle group in the body is broken down, isolated, and obsessed about more than the chest.

And even though it sounds like the start of a Dr. Seuss book, it’s actually not completely without merit. Let me explain…you see…when muscles contract they do so following the “ALL OR NONE” principle…which means that it either contracts or it doesn’t, there is no “sorta” here!

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