how many crunches a day should i do to get a flat stomach

############################# Video Source: www.youtube.com/watch?v=nBKqx0cHcr8

how many crunches a day should i do to get a flat stomach. Here in this video i talk about how many crunches a day should i do to get a flat stomach.

how many crunches a day should i do to get a flat stomach, how many crunches a day should i do, crunches, crunch
#############################