Fast Mass is designed to give you the nutrient packed calories your body needs in one powerful serving. Loaded with up to 58g of high-quality protein and energy-rich, glycogen-boosting carbohydrates, Fast Mass makes it easier and more enjoyable for you to gain size Fast!THE CHAMPION’S FAST MASS BUILDER! Any seasoned bodybuilder knows that in order to keep gaining muscle mass you’ve got to do four things: train hard, eat high-protein foods, get plenty of rest and consume lots of nutrient-packed calories. Miss any one of these, and you might as well take up knitting, because you won’t be growing.