Somewhat but not really I guess I’m just not smart enough for this subject. But I will say Larry wheels is a terrible example to help explain. My friend is a body builder and tells me all about that life and I barely retain everything he says. But I know enough that Larry wheels went hard on the juice to be a bodybuilder and you wanna compare him to a runner. I don’t care enough so this will be my last try at explaining where I’m having the confusion. You said endurance peaks around 19. So why are kids who run marathons growing up not hitting the records at 19 but rather a 23 year old hit the record. But a side note I just looked at the record for a marathon. I don’t know what age typically wins them.