Waxy maize is one of the newest product of supplementation market. It is the long-chain waxy maize starch and it is the most appropriate form of effective post training support. As the study reviles, it is rapidly absorbed because of its high molecular weight, and does not cause so drastic fluctuations in the concentration of glucose as during the supplementation of dextrose or maltodextrin. Cornstarch is the best way for a full replenish of muscle and liver glycogen, and start of the anabolic process, by the gradual release of insulin - a strong growth hormone and transporter of nutrients and biochemical compounds. Waxy maize also guarantees prolonging the exertion by the gradual supply of energetic molecule. It also supports the oxidation of fatty acids which are the sole source of energy during prolonged aerobic exertion.