How do I teach a horse to move off my leg without becoming dull to the spur?

Leg responsiveness is the foundation of nearly every riding discipline, and a horse that has become dull to the spur is one of the most frustrating training problems to unwind. The good news is that dullness to leg pressure is almost always a man-made problem, which means it can be addressed through patient, consistent retraining. Understanding how it develops in the first place is the first step toward fixing it. Horses become dull to leg pressure when riders use continuous, escalating pressure without ever rewarding the response. If a rider squeezes, then kicks, then bumps with the spur — all in rapid succession and all before the horse has had a real opportunity to respond — the horse learns to wait for the loudest signal before reacting. Over time the threshold rises, and what once required a light squeeze now requires a hard kick. The cycle feeds itself until the horse appears completely unresponsive. The fix is to go back to a single, clear signal and wait for it to work. Use the lightest leg aid you want the horse to eventually respond to, and if there is no response, follow it immediately with one firm correction — a bump of the spur or a tap with a crop — then release completely. Do not repeat the light aid over and over before correcting. The sequence should be light ask, one firm follow-through, release. Horses are extraordinarily good at identifying patterns, and this pattern teaches them that the light aid is meaningful. Equally important is making sure you release the moment the horse responds, even if the response is small. A horse that moves one step off a light leg and gets an immediate release learns that responding quickly makes the pressure go away. That is the foundation of a horse that stays in front of your leg rather than behind it. Avoid riding with constant leg contact. A leg that is always on teaches a horse to tune it out entirely.