Rupture of the pectoralis major is although uncommon but increasing rapidly in incidence. The injury typically occurs in males between ages 20 and 40 years most commonly in weightlifters doing chest exercises. The injury occurs with excessive tension on a maximally contracted muscle and the most commonly occurs with the pectoralis tendon tearing away from the bone (tendinous avulsion). Credits : https://www.instagram.com/p/COsqjMSB0CA/?igshid=11ulutst9gbs5 https://www.drgordongroh.com/orthopaedic-injuries-treatment/shoulder/pectoralis-major-rupture/#:~:text=The%20injury%20typically%20occurs%20in,the%20bone%20(tendinous%20avulsion).