Neil Mitchell, 3AW radio host, claims that AFL football players are using Viagra pills to enhance on filed performance.

Viagra actually works by preventing draining of blood thereby maintaining erection. However, many players believe that taking the pill increases the blood flow, which could help them perform better on field.
Recently, news agency AFP had reported that football players with a leading Peruvian team, Alianza Lima were thinking about using the drug to improve physical conditions while playing matches at high altitudes.
Source-Medindia