Marine Corps Reference Publication (MCRP) 5-12C, Marine Corps Supplement to the. Department of Defense Dictionary of Military and Associated Terms, is an extension of. JP 1-02 and provides Marine Corps-specific terms and definitions.
To do them: 1  Lay on your back with a dumbbell in each hand. 2  Extend your arms out to your side, as if your were forming a cross. 3  Slowly, with your arms still extended, curl your hands together until the dumbbells meet above the center of your chest. 4  Slowly return your arms back to your sides.
Any chest exercise will work the entire pec muscle, but by varying the angle of attack, by doing incline or decline bench presses, for example, it is possible to target the upper or lower portions of the muscle and build a bigger chest. Top 10 tips for getting bigger pecs.