Proteni phospholipids. Is this really the case? All three BCAAs, as well as the corresponding BCKAs, are elevated in blood, tissues, and urine. BCAAs and muscle protein synthesis some reason unbeknownst to our team here at The Prltein, branched-chain amino acids BCAAs have BCAAs and muscle protein synthesis become a subject of hot debate in musxle fitness snythesis. But open your mind Cayenne pepper capsules a little bit. Who are BCAAs trash for? Should everyone throw their BCAAs in the garbage? Branched-chain amino acids consist of 3 amino acids: leucine, isoleucine, and valine. All 3 BCAAs are considered essential amino acids in that you have to get them from your diet; your body cannot make its own BCAAs Dietary proteins are the primary source of amino acids in your diet.