Co-founder of BPI Sports, James Grage, shares why branched chain amino acids (BCAAs) are his favorite supplement outside of a protein powder.

By supplementing with BCAAs you’re giving your body a source of fuel Grage says. He also prefers BCAAs because it stimulates protein synthesis. Amino acids are the building blocks of protein and protein is the building blocks of muscle.

Watch the full video to learn all the other benefits of BCAAs, including the differences between taking them before your workout, during your workout or after your workout.