As you realize, meals fuels your workouts. That’s why athletes put so much emphasis on what they eat earlier than, during, and after a experience. And one particular sort of food-carbohydrates-fill the physique with an energy source that retains you going through lengthy rides. "Glycogen is gold," says Iñigo San Millán, Ph.D., assistant professor in the school of Medicine on the University of Colorado. Hyperbole? Perhaps.