Anabolic, anti-catabolic, anti-proteolytic, protein-sparing... These are terms that describe the state of protein affairs in muscle. The bodybuilding community likes to define anabolic compounds as those which increase amino acid shuttling into muscle and increase protein synthesis. Likewise, anti-catabolic, or anti-proteolytic (the more specifically correct term) compounds are defined as those which decrease amino acid shuttling out of muscle (also...