Delving into the intricacies of hydro jumping, this segment of the lecture focuses on the pivotal concept of the "hinge moment." Illustrated through the physics of body mechanics, the coach emphasizes the importance of leaning back into the circle to initiate vertical lift-off. By maintaining proper positioning and leveraging the hinge moment, athletes can transition from a horizontal to a vertical trajectory, optimizing their jump height and distance. Visual aids, including a video demonstration featuring Olympic champion Stefan Holm, provide clarity on executing the technique effectively. From leading with the hips to emphasizing strong foot placement, this lesson equips coaches and athletes with invaluable insights for mastering the art of hydro jumping with precision and power.