Imagine your body is like a car that is meant to take a long journey the next day; what would be one of the most essential things you will check for? The fuel, right? You have to make sure there is enough fuel in that car so it will not run out on the way and stop. That’s exactly how you have to approach your body; you need to make sure you are well fed so that there is enough energy in you to burn off to make energy so you can last the entire race successfully.