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.
Chest Dips. Chest dips work various muscles in the chest, including the pectoralis minor. Chest dips use your body's weight as resistance, and each muscle group this exercise works activates the moment you get into the starting position.