In this instructional video, the presenter explains that persistent lower‑back pain during squats is often caused by a "butt wink," which is the rounding of the lumbar spine at the bottom of the movement. The presenter identifies three primary contributors: feet positioned too close together, limited ankle mobility, and insufficient core bracing. To correct the issue, three concrete cues are offered: (1) widen the stance to a position outside hip‑width to allow deeper squat depth without lumbar flexion; (2) perform an ankle‑mobility wall drill—place one foot forward, keep it flat, and attempt to touch the knee to the wall without the heel lifting; and (3) engage the core with a strong bracing cue, likened to the effort of trying to pass stool while seated. These steps aim to eliminate the butt wink, protect the lower back, and improve squat performance.
