That should be BCAA's biggest selling point. Everyone knows that muscle doesn't come easy, and if there's a way to anchor the muscle you've grown to your body and never let it go, people are going to want to buy it. Unfortunately, there is no such product that will guarantee that you will never lose muscle mass.
But what does BCAA say about preventing muscle loss? We all know that carbohydrates are always the body's main source of energy, and when we eat them they are converted into glycogen and stored in your muscles and liver. When you train, you burn out.
BCAA can be quickly converted into glucose to function, training can quickly restore blood sugar, not in our body after the original glycogen used up to consume muscle to generate energy. Studies have found that when subjects are given amino acids after resistance training, their protein synthesis rate increases and their decomposition rate slows. However, these studies only focused on short-term changes in BCAA synthesis rates within a few hours after BCAA was introduced into the body, and did not directly measure muscle size differences. Therefore, even if BCAA can directly stimulate protein synthesis and reduce protein breakdown, this does not mean that muscle can be increased, because short-term changes in synthesis and breakdown rates do not represent muscle growth. So in terms of preventing muscle breakdown, it's not that it doesn't work, it's that it doesn't work at all.