Arginine is one of the so-called conditional amino acids, which are not essential except in periods of illness, stress, or development. The body produces it to a large extent during development since it is one of the main precursors of growth hormone and, therefore, plays an important role in the development and recovery of the musculoskeletal system. Enhance your workouts with AAKG. Increase endurance, improve blood flow, and optimize your physical performance.