Scivation Xtend is the industry standard for intra-workout BCAA’s and muscle fuelling nutrition. Xtend is completely free of sugars and carbohydrates which means that as well as increasing muscle recovery and muscle building it is also great for helping fat burning. Whenever you are training, particularly when you are training at a calorie deficit your body has the tendency to burn muscle as well as fat for energy. Xtend provides your body with the nutrition it needs to maintain muscle mass so that your body targets fat stores as an energy source instead of muscles.