Some people will do anything to win—including really gross things. Even if you set aside obviously gross and illicit behaviors, like using drugs or blood doping, a stunning number of athletes have tried some truly jaw-dropping activities in the hopes that doing so might somehow give them a competitive edge. In nearly every case, however, there's no science proving the perceived benefit and often plenty of science documenting why it is a terrible idea. Here are 9 disgusting things athletes have tried that no one should ever do again.
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