Athlete physiology, artwork
Athlete physiology. Computer artwork of a male athlete, with enlargements to show the important physiological enhancements typical of most athletes. These include an improved blood supply to carry oxygen around the body, and enhanced muscle tone. These are often areas targeted by performance enhancing drugs such as erythropoietin, a hormone that controls red blood cell production (erythropoiesis), and anabolic steroids, which increase muscle mass.
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