I`ll tell you about the process which at many raises questions: the direct muscle of a stomach has no top and lower part. Fibers of this muscle settle down from top to down on all length, and in time trainings of fiber are equally reduced both above, and below. It means that swinging a press, it will always be equally studied on all length.
One of models of Victoria’s Secret shows an excellent exercises which will create a good relief and will reduce waist measurement. I will add one more important point: one exercises you won’t drive fat. Working on a muscle, you watch food, choose dietary products and refuse suppers.