Jockey

The modern does not "sit" on the horse. They hover. Known as the "monkey crouch," the jockey ’s back is flat, their pelvis is hovering an inch above the saddle pad, and their knees are locked forward against the knee rolls.

: They require immense core and leg strength to maintain a crouched "martingale" posture that minimizes wind resistance and helps the horse balance. [11, 19] jockey

The term originated in England, initially used to describe horse racing riders. The modern does not "sit" on the horse

They sit barely three inches above a thunderbolt of muscle, weighing less than most marathoners, and decide a race in a heartbeat. Jockeys are small in stature but colossal in skill — the invisible architects of victory. : They require immense core and leg strength

: High-intensity workouts often include burpees, mountain climbers, and squat jumps to build the stamina required for a fitness test .