If the patient has two legs feeling tired: First, see the lumbar spinal stenosis, this condition is related to the protruding intervertebral disc, and lumbar spinal canal bony stenosis, or lumbar spinal slippage, which will compress the spinal cord in the spinal canal, causing the patient to have obvious soreness and pain in both lower extremities, feel tired and heavy symptoms in both lower extremities, after a long time walking, intermittent limping will occur. Second, it is seen in the symptoms of muscle strain caused by excessive stress on both lower limbs, which will lead to muscle spasm, contraction and relaxation, and will also appear to have the symptoms of wrinkling, stiffness, sinking and fatigue of both legs. Third, in patients with varicose veins in both lower extremities, it will lead to bruising and swelling of both lower extremities when the patient moves, and it will also lead to symptoms of sinking and fatigue in both lower extremities.