In the competitive sport it is no mistake that to win is very important. Desperate to win, or too eager to have someone to win, illegal methods may be employed. Doping is to exploit the knowledge of sports medicine and do the advantageous but unnatural and unfair things in the competition. In many cases, special medicine is used to increase the competitiveability more than the real one. For the athletes who are training seriously,this is nothing but "cheating".
Competitive sports is interesting because the hqrd trained atheletes compete under certain rules. As a result, the winner is praised, and even the loser is given the generous applause. Also people involved in the sport is valued in society beause they try to achieve the goal by a serious effort. They are believed to have good human nature and social relation. However, with the use of drugs in sports, winning or losing becomes meaningless and sports will become nothing but a spectacle show. The doping is bad because it impairs the soundness of the sports, lowers the value, and ruins the sports.
From the medical point of view, it is not good for healthy athletes to use medicine unless they are ill. Of course medicine is likely to affect the body becasue each medicine has side effects, s