Lower Back Pain
Lower back pain can be caused by a few things, tight "QL" muscles, which is a muscle in the lower back, or tight gluteal muscles like the Gluteus Medius.
Of course, muscle tightness isn't the only reason why you would have lower back pain, sometimes hips aren't aligned properly or you have a slipped or compressed disc. Even if these are the case, restoring proper muscle contraction and relaxation will make a world of difference in relieving your pain.