Sitting to much - driving a lot - constant stress? All of these things can cause tightness in one of our major hip flexors known as the PSOAS muscle. As it attaches to the lower back, threads deep through the hips and connects to the inner top of the thigh, tightness and shortening causes problems with our lower back and hips. This class is a quick fix, to stretch the muscle in the opposite direction than what we are used to. I would recommend doing these stretches regularly if you do have a job where you are seated a lot. Enjoy Bec x