Accelerated Amino Transport. Aminos are the basic building blocks of muscle. Aminos can also trigger anabolism, the cornerstone of muscle growth. As a lifter, you need them, especially the right ones. While there are nearly two dozen different amino acids, only a select few are absolutely essential for igniting the anabolic drive, as new research has shown. Not surprisingly, these required aminos are the same ones found in human muscle protein. Animal Nitro is the first and only supplement that contains the correct ratios of those aminos based on human muscle protein itself.