Get off the ground and out of that crunch position!!!! Too many crunches can do a number on your spine, try these 3 exercises using a stability ball. By training on a unstable service your body fires more muscles, stabilizers, and proprioceptors. Simply put, more things firing, more calories burning.. getting you in better shape and giving you a more intense workout compared to doing 500 crunches and wondering why your back is killing you! Create a great day!! -Coach T