USN HyperBolic Mass is designed for individuals with a fast metabolism who demand a high level of energy from quality carbohydrates to prevent the breakdown of muscle tissue for energy.Among the most beneficial and effective supplements in any sports nutrition program, are the BCAA’s, leucine, isoleucine and valine. The combination of these three essential amino acids make up approximately 1/3 of skeletal muscle in the human body, and play an important role in protein synthesis, and thus muscle growth and repair.