Oh, that’s a difficult thing to do. Stomach crunches are the only way to shape you stomach and this are not easy to do. They are painful and you might end up throwing up. I suggest you do it on an empty stomach; otherwise it might not be pretty. You must be able to do at least 100 crunches a day for the next 3 months. You will witness noticeable changes in a month or so and complete reduction can be seen at the end of the third month. You can also use a dumbbell to do the crunches. Cheers