What are essential amino acids and why are they indispensable?Essential amino acids are protein-building elements that the body cannot produce, so they must be obtained through a balanced diet. Of course, the amount taken in through diet can also be supplemented with food supplements.They are essential for muscle building and muscle regeneration, but also contribute to the functioning of the immune system and metabolism, as well as to mental performance.Amino acid supplementation is common, whether in the form of BCAA or full-spectrum amino acid products (EAA) for athletes, or in the case of a