TL;DR- don't be twats and push your babies too fast & ruin them. .
#unpopular opinion here, but I read THE best quip on Facebook recently regarding starting young horses. I'm a FIRM believer in taking it slow and preserving the MENTAL wellbeing and physical state of our equine partners. I take immense pride in having an exceptionally sound 15 year old OTTB who's evented and jumped for over 10 years now. It SICKENS me to see 5-6 year olds running prelim and above. WHY? Why do this? For your own selfish reasons? Good luck with their joints later in life! Good luck when they mentally break down and suffer because you, as a human, couldn't take a few years to bring them along slowly and properly. I got so much shit for creeping with Yankee, and then Bacardi, but god bless it--it paid off didn't it. I can't do anything but shake my head at people who force their youngsters farther and faster than necessary and yes, I am judging the shit out of you ✌🏼"No matter how talented he is, no matter how easy everything is for him, the rider must keep himself in check, so that he does not accept everything the horse wants to give him right away. These animals especially give more than they are able to and more than they are supposed to, until they realize that they have run out of steam, even if they want to keep trying, because all their limbs are aching, or because their tendons, bones, or joints have suffered damage. Then it is too late, and it generally takes a long lay-up time and much care before the horse recuperates" 🎤 ⬇️