What is correct bend in dressage and how do you achieve it?

Correct bend in dressage describes the horse's uniform curve from poll to tail that follows the arc of the circle or curved line being ridden, with the horse's spine aligned with the curve and the inside hind leg stepping forward and inward toward the outside front leg's track. This uniform bend is what distinguishes correct work on a curved line from the common error of neck bend without body bend, in which only the neck curves inward while the rest of the horse's body remains straight or even drifts outward. The correct bend requires the horse to be simultaneously bent around the rider's inside leg — which acts as the center post of the curve — and supported by the outside rein and outside leg, which prevent the horse from falling through the outside shoulder and maintain the shape of the curve from the outside. Achieving correct bend begins with the rider understanding that the inside rein is not primarily responsible for the bend: using the inside rein to pull the horse's head inward typically produces neck bend without body bend and causes the horse to fall through the outside shoulder, which is the most common error in bend work. Instead, correct bend is established by using the inside leg at the girth to encourage the horse to swing its barrel away from the leg and step under with its inside hind, while the outside rein receives the horse's energy and prevents the neck from overbending inward. The outside leg, slightly behind the girth, prevents the hindquarters from swinging outward and maintains the horse's alignment on the curved line. Developing correct bend requires patience and systematic work because the horse's natural crookedness means it will naturally attempt to bend more easily to one side and to avoid genuine bending on the other.