I want to know how long these drugs stay in your system, and how many times you need to take them for you to see benefits. These top people are only racing about twice per year, three races would be a lot. If the drugs only stay in your system a week or less it's easy to dodge the in-competition drug tests. How often are they being tested out of season? If it's only in your system five days after use, and you only need to take it 4-5 times to see benefits, then there's only about 20-25 days you might fail a test. If you're only tested once or twice randomly in out of competition test then there's only about a 10% chance you might get popped. And if your anti doping people are corrupt, you could get a heads up and avoid the test.