How do you roll your belly?
their are 2 parts of the stomach.lower and higher.you must suck in your lower, and keep your higher the same.for beginners, try slouching down and sucking it in.breathe in and out, exaggerating it with your stomach.keep doing it.start off by going slow, then fast.when you accomplish going fast, you'll realize that you did your first bellyroll !=]hope it helped.* also push in your pelvic muscle