Throwing — like a baseball pitch — is a complex, whole-body movement. But this post focuses on a few of the major upper body muscles involved in the action: pectoralis major, pectoralis minor, latissimus dorsi, serratus anterior, trapezius, and the muscles of the arm and forearm. Yes, other muscles are involved — of course they are. But if you’re the sort of person who lives to nitpick instead of actually taking in what’s being shown, then maybe this content isn’t for you. For everyone else, thi