DO IT Train your core with these eight moves three nonconsecutive days a week to flatten your belly and get super sexy abs! Either do them all together as a stand-alone workout or add three or four of them to the end of your usual strength-training routine. For each move, start with one set. Once you can complete all the reps with perfect form, add another. Then check out WH‘s “Get In Olympic Shape,” where the best women in sports, Olympic medal-winning athletes, teach you how to get a killer body.