The lower body -- the glutes, abs, thighs, legs and hips -- is a monumental challenge for many fitness fanatics. It's difficult to tame, taxing to tone and feels impossible to shape. Join fitness instructor Lisa Kay in this exhilarating 30-minute program, part of the popular Fast & Firm series, that takes on the body's lower half with a series of exercises designed by The Firm to make it lean and shapely.