With the stability ball, a small movement can make a big impact. You will feel this in your chest, shoulders, biceps and forearms.
How to: Standing tall with knees slightly bent and shoulders down, hold the stability ball in front of you with hands on either side. Arms should be bent with your elbows out, parallel to the floor. Inhale with your core breath and exhale as you squeeze the ball. Be sure to keep your shoulders relaxed and do not allow the ball to rest on your chest.