SFuels TRAIN drink used in conjunction with aerobic zone 2 workouts supports improvement in fat-oxidation efficiency. SFuels TRAIN is crafted with a blend of non-carbohydrate extended substrates (fuels). SFuels TRAIN includes ingredients such as Glutamine and specific fatty acids derived from C8/C10 MCTs (medium-chain triglycerides), with no added carbohydrate, fructose or glucose - in minimizing insulin (blunts fat oxidation) secretion. DOSAGE: 1 serve/hr/20ounce water. See Product Usage Guide for more dosage guidance relative to the intensity of your workout.