Standing Single-Leg Stance Hip Flexion and Knee Extension

A nice balance stability & mobility drill working on Psoas muscles, abdominals, hamstring muscles, Quad, and Adductor Magnus. Place the ball between abdominal muscles & thigh, keep pressure in the ball as you maintain MAX hip flexion, and extend the knee. You will not get complete knee extension if you are maximally pulling the knee as high as possible. Drive the stance leg hard into the ground to maximize glute engagement and to lengthen hip flexors and Rectus Femoris in the thigh.