Killer ab burner on the Fitball to fininsh your workout! @goodlifehc . 3 ROUNDS 20 x Supine Twists 20 x Oblique Crunches 20 x Full Extension Sit Ups 1min Lay Back Hold 10 x Fitball Tucks 10 x Fitball Pikes . Enjoy! ab . #abs #fitball #goodlifehc . Talk Talk - George Maple