Part 1 of Essay
Athletes today will do almost anything to get an edge. In the past athletes had to turn to such things as anabolic steroids or blood doping (the process of taking out blood and adding oxygen to it and putting it back into your body in order to increase a persons endurance). However, these procedures have many drawbacks. ....

Part 2 of Essay
.... competition.” (Brody 84) What is ? is a nutrient that is found in many foods. It is most highly concentrated in lean red meat. “A half-pound of red meat contains about two grams of ”. (McDonald 78) Your body also produces in very small amounts. is necessary for proper cell functions and reproduction and is one of the main energy stores for muscle. How does work? When somebody is exercising, his or her muscles demand energy. The energy that the muscle gets is called adenosine triphosphate (ATP) ....