We shall provide our body with suitable conditions for its optimal functioning. Above all that includes providing all the necessary compounds that perform a number of key tasks. One of the most important are the essential amino acids (EAA), among which are the following: histidine, isoleucine, leucine, valine, lysine, methionine, phenylalanine, threonine and tryptophan. They cannot be synthesized by the body, so therefore it becomes essential to provide their optimum amount and in the appropriate proportions. When physical activity increases, supplementing of them becomes a priority issue, as demand for them increases. And the benefits? The correct course of biochemical processes, including anabolism, liver regeneration, which is the center of detoxification and metabolism, increased fat burning, accelerating and improving of the nervous and cardiovascular systems. Additional benefit is the, synthesis of such important compounds as growth hormone, insulin, serotonin, or hemoglobin.