Lumbar pain and lack of energy may be due to lumbar myofascial strain, lumbar degenerative diseases, viral colds and other reasons. 1. If there is long-term sedentary work, lumbar fatigue, cold, bending and weight-bearing, etc., it may cause myofascial strain in the lumbar back, which may lead to the symptoms of lumbar pain and lack of energy. 2. If you suffer from lumbar osteophytes, lumbar disc herniation, spinal stenosis and other degenerative diseases of the lumbar spine, the nerve roots may be stimulated, causing pain and weakness in the lower back. 3. If you have a viral cold, it may cause pain in the limbs and a lack of energy in the body. You should go to the hospital in time for symptomatic treatment and follow the doctor’s instructions for medication.