Of the 20 amino acids required for protein synthesis, six of them (arginine, cysteine, glutamine, leucine, proline, and tryptophan), collectively known as the functional amino acids, regulate key metabolic pathways involved in cellular growth, and development, as well as other important biological processes such as immunity and reproduction. Note: Intense exercise decreases the plasma glutamineContinue reading “For energy metabolism, consume protein- rich foods (6 functional amino acids); brain uses 20% of the energy from food”