Something you are all omitting about secretariat is what happened after he died.
He was taken to a science lab and cut open to see why he was so fast. Scientists were psychologically SHOCKED. His heart was 3 times any horse heart they have ever seen. His horse lungs were 4 times any horse lungs they have ever seen. His horse organs were bigger and better than all other the other horses. Because his heart was bigger, that not only meant he could pump more blood. It also meant he had more love for running that the other horses. He was bigger and better than all of the other horses. In other words, he was alot like the republic of texas. Bigger and better.
My handle 430miler, comes from me REPEATEDLY running an average mile time of 430. But my p.r. is 427, and of course my 1500 time in college is extremely faster than that.
Bigger organs mean faster horses.
Bigger hearts mean more love and passion.