From a biochemistry perspective, amino acids are the "building blocks of life," essential for synthesizing the proteins that form muscles, enzymes, and hormones.
These are the reserves called up in times of crisis. Under normal circumstances, your body makes enough of them. However, during periods of intense stress, illness, or injury, your internal production can’t keep up with demand. Arginine and Glutamine fall into this category. amino bio
NH2 - C - COOH