Salt will lead to the retention of excess water under the skin. For the highest results, foods high in starch should be eaten several hours before the event. Fruits and vegetables will deliver several minerals into the body. Bananas bring potassium into an athlete's body. This in important because potassium reduces the risk of muscle cramping during the event.
Water is a mainstay in any athlete's body.
It contains electrolytes, which are necessary in the body before, during, or after a workout. During competition sugars and electrolytes are necessary. Powerbars are a type of candy bar made specifically for sporting events. They carry simple saccharides needed for rapid oxidation. Beverages such as Gatorade and Powerade are another pathway to taking in simple compounds.