Xtend lemon lime sour powder is the ultimate, sugar-free, bcaa-containing drink mix to be consumed during exercise (intra-workout). Physique athlete, strongman, powerlifter, traditional athlete (e.g., football, basketball, baseball, soccer, etc), endurance competitor, or just looking to significantly change your body composition through resistance training and nutrition, xtend is ideally formulated to maximize training intensity and support your goals. Xtend was the first and has become the most well-recognized and used intra-workout catalyst product because it not only works but it tastes great too.