I trust no longer on expert opinions and diet advice, but eat and drink only what I signaled my body and the demands for large efforts for some kind of energiehaltigem drink. Previously I had used for long runs and bike tours Isostar and then I went on because of the obtrusive artificial taste changed with maltodextrin even mixed drinks. But that was flavorful and not so great. Now I had brought a bag of random Powerbar (50g) for testing. It tastes slightly fruity (not the absolute good taste, but far better than anything I had ever tasted) and but also ensures the necessary energy with me. I can through my long experience with 4 - not assess 6-week in some cases very hard routes in Scandinavia quite well what I use and what. The drink of Powerbar clearly contributes to greater efficiency and ensures my power supply (50 g in 500 ml of water). In addition, for me it is hardly possible, 12000-15000 kcal per day to take (result of Mitprotokollierens on a tour) fast and easy to digest normal food to me, which are required for some of the tours. My stomach would burst.