Originally Posted by mickieb

Try it on the 7 miles. But remember to fill up on the fats and proteins before hand. Not just the night before, but work up to it over a few days. With the carbs, the body uses up the initial amount pretty quickly and then has to go to the reserve, but again it will get depleted in a marathon run. Then the body will attack the fat! And as long as you have the dietary fat in there to use and body fat (so you cant be stick thin!). I know I have walked miles and miles on fats and protein and I was fine. I dont run though. If you try it, let us know what happens!