If you want a flat belly, not only should you do crunches, but you need to add in cardio. Kickboxing is a great aerobic workout, which will help tone your midsection. These powerful kicks give your abdominal muscles a great workout. Tae kwon do is also a great cardio ab workout.A great way to help you get fit is to start doing compound lifts. Compound lifts are lifts such as the bench press, squat, pull-up, and deadlift. These lifts are better than isolation lifts because they use more than…See More