The days of loading your body with empty fat storing calories are over. Calories don't stimulate muscle growth - anabolism does! High-speed macronutrient delivery with near-perfect insulin optimization sets CARNIVOR MASS apart from all others. As the pros know, fast proteins combined with elevated insulin equals explosive muscle anabolism (growth). This is finally possible with MuscleMeds world-famous Beef Protein Isolate acting in combination with iSpike, a dual insulin release/insulin signal amplifying technology not found in any other supplement.