“The Psoas muscle, often overlooked in athletic training, plays a crucial role in body movement and flexibility. This deep-seated muscle connects the spine to the hip flexors and acts as the initiator of many movements. Contrary to popular belief, stretching might not be the best approach for the psoas, as its function is more about strength and stability rather than mere flexibility. Pilates, yoga, and even some chiropractic advice might oversimplify its importance. Through targeted training, such as Reflexive Performance Reset (RPR), athletes can potentially enhance their performance, as evidenced by improved sprint times and increased peak velocities. Moreover, maintaining control over the rib cage edge, which interfaces with the psoas, is fundamental for preventing injuries and ensuring optimal athletic function.”