With a foam roller, lie on your front in a front plank position, with your forearms on the ground Place the roller under one hip and with this leg extended Bend the free leg (leg with no foam roller) up to form a near right angle to use as an anchor Using the anchored leg to guide the movement, slowly move your body forwards and back so the hip rolls over the foam roller To get a deeper stretch, change your hip positioning to get the pressure from the foam roller into different areas of your hip joint, or put more of your body weight onto the foam roller (less weight on the anchored leg) Ensure you do both sides