This exercise strengthens the arms, chest and shoulders while increasing coordination and core stability.
Begin with putting your feet together on the exercise ball, hands on the floor beneath your shoulders, and arms straight in push up position. Find your balance in this position.
Once you have found your balance, bend your slowly arms lowering your upper body towards the floor as you inhale. Be sure to keep your body straight and keep your shoulders directly over your hands. Hold this position for 2 seconds then exhale as you straighten your arms, returning to the start position. Repeat.
This exercise is easier with your feet slightly apart and more difficult with your feet together. Start with 3 sets of 8-10 reps.