Pelvis and Rib Cage Control

The drill preserves trunk control while creating upper-back opening. Better rib cage and pelvis organization improves trunk-level changes during the squat. The body should not sag while the drill is held. Excessive anterior pelvic tilt and rib flare make abdominal control of trunk position, pelvis position, rib position, and breathing mechanics harder. Moving the rib cage down, back, and in while posteriorly tilting the pelvis helps inhibit extension-based muscles. The upward movement is performed while maintaining the squeeze and avoiding sagging. The abdominals help reposition the rib cage and support posterior pelvic tilt. Stacking the breathing and pelvic diaphragms supports 360-degree intra-abdominal pressure during squat descent and ascent.