naNO Vapor is extremely powerful, so do yourself a favor. Start off by mixing 1 scoop (1 serving) with 3 to 4 oz. of cold water and downing it about 15 minutes before hitting the weights. Then, grab something heavy. As you develop respect for, and understand the power of naNO Vapor, you can gradually increase the dosage to 2 to 3 scoops (2 to 3 servings) mixed in 8 to 12 oz. of cold water before working out.