Plow horse, quarter horse or a thoroughbred race horse, you can’t train them all the same. They all have different inherent qualities that must be taken in consideration.
Too often I am seeing thoroughbreds being trained like plow horses with extreme workloads, heavy sleds & heavy lifting. Never forget we are what we train to be. Also, something I learned many years ago – it is much easier to make someone slow than is to make them faster. I was a master of that early in my coaching and with myself as an athlete. You must train fast with high quality to be fast!