The latest fads to increase muscle mass and energy. A look at what some athletes are using

How different fads get started in different parts of the country defies rational explanation. This holds true in the world of athletic competition. In one locale athletes may be taking ginseng to promote strength, while in another they may be taking antioxidants to recover quickly after exertion. As Dr Woolley explains, some of the substances used do have the desired effects, some appear to have little or no effect, and some have dangerous effects.