Jockeys ride in a crouched, standing position because it makes the horse faster. When race times and records were first tracked around 1900, the adoption of this posture improved speeds by 5 to 7%. The technique works by decoupling the jockey’s body from the horse’s bouncing stride, saving the horse a significant amount of energy it would otherwise spend lifting the rider back up with every step.
How the Crouch Saves the Horse Energy
A galloping horse’s back rises and falls roughly 150 millimeters with each stride. If a jockey sat firmly in the saddle, the horse would have to haul that extra weight through the full range of that motion, pushing the rider up and absorbing the rider’s downward force on each landing. The metabolic cost of carrying a load increases in direct proportion to its weight, so even a lightweight jockey adds meaningful drag when fully coupled to the horse’s movement.
In the standing crouch, the jockey’s body moves only about 60 millimeters vertically per stride, less than half the horse’s own displacement. The jockey essentially floats above the horse, absorbing the difference through their legs. As biomechanist Alan Wilson put it, jockeys “don’t follow the movement of the horse but stay relatively stationary.” The horse still supports the jockey’s body weight, but it no longer has to accelerate and decelerate that weight through each stride cycle. Think of it like a backpack suspended on bungee cords: the load is there, but it bounces far less than the person carrying it, reducing the energy cost of walking.
What Happens When a Jockey Sits
When a rider sits, their body becomes tightly coupled to the horse through the saddle. Every time the horse’s back drops, the rider’s full weight slams into the saddle, and the horse must then push that weight back upward during the next stride. Research on horses ridden in a seated position shows this creates a larger downward impulse that limits how much push-off the horse can generate from both its front and hind legs. The hind legs compensate by landing sooner and driving harder, which changes the horse’s natural gait and costs more energy per stride.
The seated rider’s weight also causes the horse’s hooves to sink deeper into the ground on impact, extending landing durations and delaying the point where the horse can push off again. All of these small inefficiencies compound over a full race. In practical terms, the horse is working harder just to move its rider rather than channeling that effort into forward speed.
How Jockeys Stay Stable at 60 km/h
Holding the crouch position for the length of a race is genuinely demanding. Jockeys maintain it by activating their quadriceps, hamstrings, and glutes in synchrony with the horse’s movements, using continuous flexion and extension at the knees and hips to absorb the horse’s vertical oscillation. Their legs act as living shock absorbers. The greatest displacement happens at the jockey’s center of mass (around the hips), and that movement decreases progressively toward the upper body and head, keeping the jockey’s eyes and balance system as still as possible.
This damping comes at a cost. Race-riding jockeys experience more side-to-side and front-to-back movement in their head than jockeys riding at slower training paces, because the crouch trades vertical stability for lateral instability. Synchronous muscle activation throughout the entire body is needed to counteract these forces. It is an athletic feat that demands exceptional core strength, leg endurance, and coordination, all while controlling a 500-kilogram animal at top speed.
Where the Technique Came From
Before the early 1900s, jockeys sat upright in the saddle with long stirrups, much like casual riders today. American jockey Tod Sloan developed the crouched posture, which observers nicknamed the “monkey crouch” because of how it looked. The style was initially mocked, but Sloan’s results were hard to argue with. Other jockeys adopted it, and within a few decades it became universal. Every professional jockey in the world now rides this way.
The 5 to 7% improvement in race times that followed the switch is enormous in a sport where margins are measured in fractions of a second. To put it in perspective, that kind of gain would be comparable to shaving multiple seconds off a typical flat race. No change in horse breeding, track surface, or training method has produced a comparable single leap in performance. Sloan stumbled onto a biomechanical principle that wouldn’t be formally measured and explained by scientists for another century.