Why can't you ride a horse at to young of an age?

Because they are still growing, it can ruin their back and legs. In fact, it can pretty much destroy them.

Because they are still growing, it can ruin their back and legs. In fact, it can pretty much destroy them.

The issue is in the joints. If you start to train a horse too young the joints do not seal properly. Typically we wait until three for quarter horses and as much as five or six years for draft breeds.