as i have said before many times
other trainers burke competes against have been caught using illegal substances/methods and a few even went to jail
now burke crushes them and everyone else
so burke is destroying trainers using illegal performance enhancers
so he is either using and not been caught or is the greatest trainer ever
i reference the 1988 Olympics 100m dash in which ben johnson was caught using steroids, after the race, turns out 6 of the 8 runners in that race also tested positive for drugs in the coming years