The Pec Major: Part 1 - Anatomy of a Beautiful Muscle 💪✨ The Anatomy 🔬 The pec major has 3 heads: 1️⃣ Clavicular head (upper pec) – Attaches to medial half of clavicle 2️⃣ Sternocostal head (mid pec) – Attaches to sternum ribs 2-6 3️⃣ Abdominal head (lower pec) – Attaches to rectus sheath (can vary or be absent!) All three converge to insert on the humerus (arm bone)! The Functions 💪 All 3 heads work together for: ✅ Internal rotation of shoulder ✅ Adduction ✅ Horizontal adduction (the most lo
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The Pec Major: Part 1 - Anatomy of a Beautiful Muscle 💪✨ The Anatomy 🔬 …
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The Pec Major: Part 3 - Targeting Upper, Mid & Lower Pecs! 🎯💪 Want balanced, aesthetic pecs? Time to target specific areas by changing joint angles! Fiber Orientation Breakdown 🔬 Lower fibers (abdominal head lower sternocostal) → angle upward Central fibers (mid sternocostal) → true horizontal Upper fibers (clavicular head) → angle downward The Exercise Angles 📐 Decline Bench Press → Fires more into lower pecs (lower fibers) Flat Bench Press → Fires more into mid pecs (central horizontal fib
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The Pec Major: Part 3 - Targeting Upper, Mid & Lower Pecs! 🎯💪 Want b…
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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
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Pectoralis Major Muscle Anatomy - Bodyworks Prime
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📍Unlock Your Pecs📍 💪 The pectoralis major is the large chest muscle that connects your chest bone (sternum) and collarbone (clavicle) to your upper arm bone (humerus). ➡️ Because we sit and slouch so often for computer work, driving, or school, the pecs often become shortened and tight, pulling the shoulders forward and contributing to that rounded posture many of us want to fix. 💡Pro tip: The pecs are easiest to mobilize and stretch when your shoulder is in extension, external rotation, and
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