While your article is inspiring, I'm going to have to step in here. Most of these athletes are juiced to the gills looking at Bolt and Phelps specifically (doping tests, you might say? Nope ) Companies like Nike, Adidas etc prefer having "super athletes" like Bolt so they their marketing campaigns are more effect. Some drugs are very hard to spot (and sometimes impossible as there are methods to hide use aswell as newly created drugs have evolved, like all industries) other than the usual drugs the only thing that might show something is the Athletes Passport which again might only show up years later if ever. There's too much profit to be made and like everything there's hidden agendas and people in the inside to cover up most if not all of this.
I know this sounds sad but it's the truth of the matter and most people in the field know this.
Repholder: Physical Education and Sports Science Degree with a speciality in Track and Field throws.