Inclusion Criteria:  Both genders of age 30 to 55 year. Patients with pain for at least three months or more (chronic stage). Patients having score of at least 3 on 0-10 points(NPRS). Diagnosed patients of low back pain. Non-radicular low back pain. Quadratus Lumborum tightness by physical test i.e. side bending test.  Exclusion Criteria:  Pregnant females. Lumbar radiculopathy. Any spinal pathology i.e. infectious disease and fracture. Any congenital deformity of spine, upper and lower extremities. Systemic illnesses i.e. cardiovascular disorders, respiratory disorders etc. History of surgery of hip, pelvis, lumbar spine, disc herniation.