Such a no brainer is sometimes overlooked, but take your multi! "For the human body to perform at its maximum potential, it must be fed a vast and complex array of vital nutrients. Becoming deficient in just one of these essential vitamins or minerals breaks down the metabolic pathway that produces optimum efficiency and performance declines. Not good! Daily consumption of a high-potency multivitamin/multimineral formula may help ensure the presence of essential cofactors necessary for thousands of metabolic reactions." "One can consume all the right amounts of these fats, carbohydrates, and proteins, get all the exercise needed, but unless there ALSO are VERY ADEQUATE amounts of vitamins in the body to regulate how these macronutrients are used, benefits achieved will be SLIM TO NONE.....With the exception of Vitamin C (ascorbic acid), all of the water-soluble vitamins (meaning vitamins that need to be replenished EACH and EVERY day because they are flushed out) assist enzymes that function in energy transfer/metabolism of fats, carbohydrates, and proteins" Do you take your multi?