BCAAs Amino Acids have more research that supports their use than most other supplements on the market. BCAA’s are useful for people who are trying to gain mass and especially useful for people trying to maintain muscle mass on low caloric diets making them essential for anyone wanting to keep a lean physique.
BCAA’s stimulate protein synthesis potentially even to a greater extent than a normal protein by itself. They also increase synthesis of the cellular machinery responsible for carrying out the process of protein synthesis (or protein creation).
BCAA’s also help improve your workout intensity. BCAAs compete with the amino acid tryptophan for entry into the brain, where tryptophan is converted into serotonin. Serotonin levels rise when you exercise and increase your perception of fatigue and if you’re feeling tired it will be much harder to workout.