With your recipie how do you know the percentage carbohydrate, protein or fat. Many of these bars and drinks have these % displayed. There is extensive research on the beneficial aspects of intake of carbohydrate particularly during endurance exercise. However, if this percentage is too high prior to the onset of exercise you can induce a insulin response. Gastric emptying and intestinal absorption has been shown to be limited when carbohydrate is above 8% There are some good product on the market its just a case of hunting the right ones out. Mike Garrett %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%