Getting a flat tummy requires both abdominal exercises and eating a healthy, well-rounded diet. Practice the proper way to do crunches for flattening the abdomen with a demonstration from a PMA-certified Pilates teacher in thisfree video on core exercises. Expert: Teresa Sciarretta Contact: www.PilatesStudioCity.com Bio: Teresa Sciarretta is a PMA-Certified Pilates Teacher and has completed numerous continuing education workshops including Pilates for Pregnancy and Pilates Protocols for Common Problems. Filmmaker: Max Cusimano Series Description: Working out the abs not only yields an attractive, flatter stomach, but it also strengthens the core muscles for better overall fitness. Practice these core exercises with help from a PMA-certified Pilates instructor in this free video series on abdominal workouts.