From the Crunch fitness series comes Crunch: Cardio Sculpt - The Body Sculpting Fat Burning Blast!, a video that provides a cardiovascular workout while toning and tightening the muscles.The 30-minute program is divided into five segments.Two sets of dumbbells from three to eight pounds are recommended, but beginners should start with just one set of light weights.This ultimate video workout allows viewers to burn fat and shape their muscles all at once.The instructor, Violet Zaki, is a certified fitness instructor with a first-degree black belt.