Amino acids are basically the building blocks of protein. Your muscles are made up of 70% water and approximately 30% protein. That protein that makes your muscle is basically amino acids, building blocks of protein. And in fact when you ingest protein, or you ingest a gram of protein, your body literally breaks it down into specific amino acids, and then rebuilds it again. And that's why, given the situation in your body environmentally, and what's happening inside your body hormonally, and so on, and the types of protein you may have ingested, your body could be, you know, deficient in one or another amino acid. But as long as it's getting the essential amino acids, it's going to make everything it needs to make the necessary protein. But that, but different amino acids can have different effects on the body, because of how amino acids are retained in the body and even how sometimes they're running through your food partitioning process that's taking place. Glutamine, being one amino acid. Branched chain amino acids, three of the essential amino acids as well. Arginine and ornithine. These are all amino acids that you've probably heard of, as having more specific solo parts in the body. And that's because they all do affect the body to some degree in different ways. Glutamine being an anabolic, more of an anti-catabolic amino acid, nonessential, but conditionally essential, we say. Branched chain amino acids are more anabolic, are going to help more with protein synthesis and even fat loss as well. And then arginine - ornithine, which has been shown to do everything from, you know, helping infertility to raising your body's human growth hormone levels. And so the timing of specific amino acids can play a role in the overall profile and picture of how you're going to build muscle. But ultimately, making sure that you're getting complete sources of protein, so that you're getting all the amino acids you need throughout the day, is your first and foremost approach.