Glutamine is a protein-building amino acid that is important for maintaining muscle as well as supporting immune and intestinal health. It is also the single most abundant amino acid found naturally in muscle. Maintenance of lean muscle is important to athletes and active individuals. A common problem during strenuous activity is the loss of lean muscle, or muscle wasting, as muscle tends to break down after strenuous activity. This negatively impacts performance and recovery. Glutamine is considered the standard amino acid when used as part of Post Workout regimen and is imperative for the hard training athlete. Glutamine may support muscle tissue by reducing protein breakdown by increasing nitrogen retention, improving glycogen and protein synthesis.