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. These drinks are high in electrolytes and simple sugars.
Water has electrolytes but special drinks have a higher concentration.
The increased concentration allows for higher absorption into muscle cells. Foods containing starch, sugar, protein, and other compound categories should be used to replenish the athlete's body following competition. This is especially important if the athlete is planning on competing in the near future. Intense action diminishes the body's stored compounds. The amount of replenishment needed varies with the activity and the athlete.