How do I soften a stiff horse?

Softening a stiff horse is one of the most rewarding projects in horsemanship because the transformation — from a horse that feels like a plank underneath you to one that swings through his back, yields to the hand, and carries himself with suppleness — is dramatic and immediately perceptible from the saddle. It is also one of the projects that requires the most patience, because stiffness that has developed over months or years of incorrect work, inadequate exercise, physical discomfort, or simply insufficient gymnastic development does not dissolve in a week of correct riding. The first step is ruling out physical causes. A horse that is stiff through his neck, back, or hindquarters may be stiff because something hurts — arthritic changes in the hocks or stifles, back soreness, sacroiliac issues, muscle tightness from inadequate warmup or turnout, or any number of other conditions that make suppleness physically difficult or painful. Have your veterinarian evaluate the horse before you commit to a training program for stiffness, and address any physical findings before you expect gymnastic work to produce results. Warmup is where softening work begins. Walk your horse on a long rein for a genuine ten to fifteen minutes before you ask for any contact or collection — let him stretch his neck down, swing his back, and warm the muscles through relaxed forward movement. A horse that has been properly warmed up at the walk is measurably more supple and responsive to gymnastic work than one that has been immediately put into a frame from a cold start. Lateral flexion is the most direct tool for softening a stiff horse. Begin at the halt with simple one-rein flexions — take a soft contact on one rein, wait for the horse to release the tension in his jaw and neck and flex toward the pressure, and release completely the moment he gives. Do both sides until the responses are equally soft, then carry that work forward into the walk and eventually the trot. Transitions are the most powerful gymnastic tool for developing overall suppleness and are dramatically underused by most riders. Frequent, well-ridden transitions — walk to trot, trot to walk, trot to canter, canter to trot — require the horse to engage his hindquarters, swing through his back, and adjust his balance repeatedly, and each correct transition develops the throughness and suppleness that a stiff horse lacks. Circles and serpentines develop the lateral suppleness that straight-line work cannot address, and a horse worked correctly on circles develops a flexibility through his body that makes everything else easier.