Two best-selling workouts for lean, flat abs! Pilates teacher Ana Caban's Pilates for Abs includes floor work that gradually gets more challenging as the workout progresses. She includes modified exercises for those new to Pilates. Yoga teacher Rodney Yee's Yoga for Abs begins with breathing exercises to help focus on the stomach muscles. Selected yoga poses work the abs to create a lean, flat silhouette and strong support for the back, release tension, and relax the body and mind.