Some men use Viagra to enhance their performance in the bedroom. Others, says former Miami Dolphins receiver Brandon Marshall, use it to enhance their performance on the football field. The current Bears' WR on Wednesday, when asked about players using the prescription drug Adderall to boost performance said: "Guys try anything just to get that edge. I'm fortunate enough to be blessed with size and some smarts to give me my edge. But some guys, they'll do whatever they can to get an edge. I've heard of some crazy stories. I've heard (of) guys using like Viagra, seriously." The effectiveness of Viagra as a PED has been studied with mixed results. The drug, which improves blood flow, is said to help athletes perform better in high altitude because it increases oxygen flow to muscles. Source: Sun-Sentinel
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