Your pectoralis major is a large and powerful chest muscle that’s shaped like a fan. It starts from two sections: your breastbone (sternum) and your collarbone (clavicle). The two sections come ...

The pectoralis major muscle is a large muscle in the upper chest, fanning across the chest from the shoulder to the breastbone. The two pectoralis major muscles, commonly referred to as the ...

Have you heard of agonist and antagonist muscle pairings before ... During the concentric phase, the prime mover is the pectoralis (chest muscles), assisted by the anterior deltoids (the fronts ...

The pectoralis major muscle originates from multiple locations, including the costal cartilage of ribs two through six, the sternum, the medial half of the clavicle and the external oblique fascia.

Dr A C Pochini, Federal University of Sao Paulo, Brazil; apochini{at}uol.com.br A powerlifting athlete ruptured his left tendon of the pectoralis major muscle while attempting to lift 160 kg in a ...

Here are the muscles you’ll target when performing a standard push-up. The pectoralis major is the largest of the chest muscles. It’s thick, fan-shaped, and found just under the breast tissue.