Thanks, TLW.
As a Master (over 45 now), I can tell you hormone levels effect recovery to the extent that IMO they are more important than coach's technique work or special workout.
Work hard, recover, get faster.
Work hard, don't recover, get slower.
The harder you work, the faster you get.
BUT when you start adding exogenous testosterone and thyroid and other research chems, you no longer reward hard work, you reward the genetic profile that responds the best to exogenous chems.
You end up with chemical warfare, not sport.
Again, running is just lucky there's no money in the sport. Look at football and baseball. BTW there is still no HGH test in the NFL.
So now, as a father of a son who loves football and has the genes to potentially play in college or beyond, what am I supposed to tell him when in comes time to have an informed discussion about PEDS?
Speaking of which, I remember reading about Salazar waking his son, who at the time was a redshirt football player at Oregon, up during the middle of the night to get one more protein shake into him to gain weight.
Are you telling me if he'd do that, he wouldn't just say, "Here rub a little of this cream on your thigh," to raise his T levels up WITHIN LEGAL LIMITS?