3-Step Approach Guaranteed To Build and Protect Shoulder Muscles | STACK

3-Step Approach Guaranteed To Build and Protect Shoulder Muscles | STACK: "If you want to build shoulder muscles, you need to understand how the shoulder works. One of the most complex joints in the body, the shoulder is the junction of three major bones—the clavicle (or collarbone), scapula and humerus—which together articulate into the glenohumeral, sternocalvicular, and acromioclavicular joints."

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