This exercise targets your triceps, lower body and core.
Lie on your back with your feet and calves on a resistance ball. Hold a three to five pound weight in each hand. Start with your arms straight above your shoulders, palms facing each other. Bend backwards at your elbows so the weights end up on the outside of each ear. As you return the weights to their starting position lift your hips up in the air. Perform 12-15 repetitions.