I didn’t want to hijack the other thread where this is mentioned, but someone mentioned the study where racehorses were studied and those who raced at 2yo had longer careers, later retirement, and more success.
I asked a prominent Orthopaedic surgeon in Lexington about this study. This person has close ties to the racehorse industry as well, and stated that the reason for the findings of the study is that those horses who stay sound through training as late yearlings and start racing at 2yo are basically self-selecting as being stronger, sounder, etc. An unbelievable number breakdown before ever getting to the track, according to him.
Just thought I would throw that out there. I don’t think anyone is advocating breaking and jumping WBs at 2yo, and I personally think some work at 3yo is good, but wanted to point out one experts take on the data, and the need to take it with a grain of salt. Carry on!