1
Position body in a prone plank position with torso supported on stability ball, hands on ground beneath shoulders, body forming straight line from head to knees
2
Engage core and maintain neutral spine alignment, place hands firmly on ground with fingers spread, knees remain in contact with stability ball surface
3
Lower hips toward ground by rolling ball forward with knees, allowing hip flexion while maintaining core engagement and spinal alignment
4
Drive through glutes to extend hips and pull knees back toward chest, rolling ball backward to return to plank position, squeeze glutes at top of movement