Have a towel and water handy to begin Cardio #4: Fab Abs. It is a 22 min class that integrates interval training techniques with fabulous abdominal exercises. Whether you are Level 1 or Level 2, you can make this class work for you by modifying each exercise. The warm-up goes over the movements used in class, and the workout is 30 sec. on, 30 seconds off with the following exercises: Plank Jump, Elbow to knee Crunches (Do bicycles to intensify), Plank Running climbers, Supine Abs (Lower the legs to boost or make them vertical to ease up), and Standing Heel Taps (Jump to raise the heart rate even more). Take a one minute break and then start over again for 2 more rounds! WOW! You may want to wear shoes for this one!