BCAAs are key ingredients to consume no matter what your sport of choice is, whether you're a bodybuilder, boxer, track athlete or swimmer; if you use muscle the BCAAs are essential to an increased performance. BCAAs contain the amino acid Leucine which is responsible for turning the body's 'on switch' for MPS (Muscle Protein Synthesis).
The body must consume from the diet what we call Essential Amino Acids (EAAs), these are amino acids that your body can't produce on it's own. For the body to create muscle protein it requires ALL of the 9 essential amino acids.
Also with added electrolytes to ensure you remain hydrated during your workouts.