BCAAs are a group of three amino acids often supplemented to improve muscle protein synthesis. Research suggests the amino acid leucine is predominantly responsible for this effect.
BCAA supplementation does improve muscle protein synthesis, in the same way that protein does. Instead of adding BCAAs to your protein shake, just throw in another scoop of protein. It’ll taste better and have the same effect.
People that prefer to go to the gym before eating, or while fasted, can supplement BCAAs to take advantage of the improved muscle protein synthesis effect without breaking their fast by consuming too many calories. Otherwise, BCAA supplementation is unnecessary if you’re already getting enough protein.
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