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 ...
Weightlifters and football players can injure their chest muscle known as the Pectoralis Major, which allows you to reach strongly across your body. Surgery may be required to repair the tear.
"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." You don’t necessarily need a bulky set of dumbbells to get the chest muscle activation you seek.
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