Join Pilates experts P.J. O'Clair and Moira Stott-Merrithew in this challenging and highly effective regimen based on the teachings of fitness guru Joseph Pilates. With the help of a stability ball, students can learn how to exhibit good form and draw intensity from a workout done entirely on the prop. As always, precision makes a huge difference in ensuring a successful workout, one that sculpts the muscles and boosts the spirit.