The Pec Major: One of the Most Beautiful Muscles in the Body 💪 Check out the pectoralis major—a stunning fan-shaped muscle that spreads across your chest and converges onto the humerus. But here's what makes it even cooler: it's actually made up of 2-3 different heads (or parts)! The Heads of the Pec Major: 🔹 Clavicular Head – Originates from your clavicle (collarbone) 🔹 Sternocostal Head – The larger section coming off your sternum and ribs 🔹 Abdominal Head – Not everyone has a prominent on