tummy flattener exercises: "Once you understand the right technique, you could do up to five hundred crunches a day, which is the maximum. On the minimum end of the scale, 50—100 stomach crunches a day, supplemented with a ten minute brisk walk will flatten the tummy. What must be noted is that you must do as many crunches as your body is comfortable doing, with consistency. Other wise after flattening, come inflating if maintenance is not taken into account. "