Darin Stein from Fat Loss Lifestyle demonstrates how to build your pectoral muscles with exercise tips. Put two medicine balls into the butt of your palms, not your fingertips, for pushups. Lower your body for two seconds, keeping your elbows apart. Get a real nice stretch in the chest and push your body up. Do fourteen pushups. For an advanced workout, elevate your feet when doing the pushups. Walk a 65 millimeter resistance ball to your toes and continue doing the pushups. In addition to toning your chest muscles, these exercises will refine your balance and define your rotator muscles and tendons.