There are 20 amino acids in total, 9 of which are termed "essential." Our bodies can't make these EAAs, so it's essential that we seek them out in our diets. The nine EAAs include: histidine, isoleucine, leucine, lysine, methionine, threonine, tryptophan and valine. By taking an EAA Supplement before, during or after your workout can produce an increase in Protein Synthesis that can create a positive protein balance and result in a muscle building state that helps you to recover and build muscle more easily.