BCAAs (Branched-Chain Amino Acids)

BCAAs offer no additional muscle-building benefit for anyone consuming adequate protein, making them one of the most redundant supplements. A 2017 systematic review found BCAAs alone may actually impair muscle protein synthesis by up to 30% compared to a complete protein source. Whey protein, for example, outperforms #10 by delivering all essential amino acids and boosting muscle synthesis by 50% more post-workout.