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If you'd like a deep dive on the extraordinary lengths professional athletes and their teams will go this is a great read: https://www.tylerhamiltonofficial.com/book https://www.tylerhamiltonofficial.com/book It not only goes into the doping, but also the training and diet necessary to get the athletes weight to a level so they can achieve the necessary power to weight ratio to compete to win. It's crazy. But when you consider the investment teams are making in these athletes, you can see their motivation to cheat the system.