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Ergogenic aids are substances, devices, or practices that enhance an individual's energy use, production, or recovery. The form an ergogenic aid may take can be quite varied. Stretching and weight training are physical ergogenic aids.
Ergogenic aids are generally classified into five categories: (1) mechanical aids, such as aerodynamic devices on bicycles; (2) psychological aids, which could include hypnosis; (3) physiologic aids,such as "blood doping," which is designed to increase red blood cell content; (4) pharmacological aids, which includes anabolic steroids; and (5) nutritional aids.
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