Perform Better AB Dolly Plus AB Dolly. . . a revolutionary way to train your abs! Flexibility and versatility are the keys to any successful workout program and the AB Dolly delivers! Various positions and movements allow you to focus on various areas so that you are constantly working all major muscle groups. You'll get a full range of motion so you can work those hard-to-get-at areas like your: Hips, Butt, Thighs, Shoulders, Arms, Upper Back, And most importantly your ABS!