Pyramid (or Runner's Stretch) will stretch the back of the legs. Begin standing at the top of your mat with feet together. Step one foot back 2-3 feet. It will be easier to keep hips square and even with a shorter stance. Slide hands down to the leg, blocks, or floor (depending on flexibility). Halfway lift torso to lengthen spine, then fold forward over front leg. Try to keep hip even to front of mat.