● Actual shorter leg ● Rotations of lower limbs ● Knock knees ● Bowed legs ● Anterior rotation of pelvis ● Posterior tilt of pelvis ● Any rotation of the scapular plane or pelvis. (onnit.com)
You can use a mirror to the side to make sure your pelvis remains in posterior tilt. (weckmethod.com)
In this position you want to find posterior tilt of the pelvis and press your spine to the floor. (weckmethod.com)