You use your chest muscles, or pecs, all the time—when you push a door, lift a child, or even just sit up straight. They're a key part of your upper body strength. By exercising your chest regularly, ...

BUILDING A BIG CHEST is one of the most common goals for gym-going guys, and for good reason. You depend on the muscle group when you press, push, and "fly" (adduct) with your arms, all essential ...