This effective and efficient form of exercise is great for beginners as well as seasoned athletes.  Customize this workout to suit your level of fitness using modifications, intensifying as you become stronger.  Alternating aerobic and anaerobic elements, this class supplies the perfect combination of endurance, calorie burning, and muscle toning.  Pair this 30-minute class with a strength class such as BODYPUMP, Barre, or Core Fit, and you will achieve the results you came for.