Mutant BCAA 9.7 Energy is a high-quality supplement that can be used as a pre-workout or an intra workout. This is because it contains amino acids which help to repair the muscle while you're training & it also contains Caffeine which will help give you a boost of energy. Each serving provides you with 9.7g of amino acids & 140mg of Caffeine while also delivering you 240mg of 8 different electrolytes which are important while training as your sweat them out, you need them replenishing.