Animal Staks primary anabolic effects come from its ability to directly influence the synthesis of anabolic hormones by converting into them. These anabolic hormones then produce the desired results. Animal MStak, on the other hand, affects biochemical mechanisms which promote anabolism: enhanced nitrogen retention, nutrition-partitioning, improved insulin function, increased protein synthesis, and reduced protein catabolism. Each of these mechanisms work together in Animal MStak to promote your bodys overall anabolic drive. And because Animal MStak can accomplish these goals without steroidal substrates such as andro or 19-nor, Animal MStak is perfectly suited for lifetime natural bodybuilders and powerlifters, as well as drug-tested athletes.