A tight quadratus lumborum (QL) muscle can cause lower back pain, hip discomfort, or stiffness. Symptoms include difficulty standing upright, limited range of motion, and pain radiating to the hips or down the legs. It may also lead to an uneven pelvis, muscle spasms, and increased discomfort when sitting or walking. #backpainrelief #physio #yogatutorial | Abi Mills Yoga