Viewers can add shape and muscle tone to their lower body while following along with this two-part floor exercise and aerobics workout. When done properly, these exercises tone up the abs, buns, and thighs so that clothing fits in a truly flattering way. Fonda spends 25 minutes demonstrating the floor exercises and 35 minutes demonstrating the low-impact step-aerobics routine. Though some beginners might be intimidated by the choreography and dance steps, the steps are repeated enough times that most people can pick them up rather quickly.