In the early 1990s, cyclists who doped at the Tour De France used so much EPOs (Erythropoietin) that they had to exercise throughout the night to prevent heart attacks in their sleep. – WTF Fun Facts
WTF Fun Fact – Early Doping In Cyclists

In the early 1990s, cyclists who doped at the Tour De France used so much EPOs (Erythropoietin) that they had to exercise throughout the night to prevent heart attacks in their sleep. – WTF Fun Facts