Lie for a long time lumbar pain: 1, may be due to lumbar muscle weakness caused by long-term bed rest braking may lead to lumbar muscle disuse muscle atrophy, appear lumbar muscle strength is insufficient, in the patient down to the ground weight or sitting and standing, it is possible that due to here lumbar strength is insufficient to produce the relevant nerve compression appear lumbar pain symptoms. 2, may be due to long-term pressure caused by long-term bed rest The process of the lumbar muscles are squeezed for a long time, causing ischemia and sterile inflammation, which leads to the appearance of pain symptoms. 3, there is also due to fatigue injury of the lumbar muscles, although lying effectively relieve the fatigue of the lumbar nerve muscles, but if lying for a long time, or keep a certain posture fixed for a long time, it will be secondary to the muscle spasm here. If the human body keeps a certain posture for a long time, it will certainly lead to a certain muscle group muscle long-term keep tension, maintain this posture, then it may cause fatigue injury of the lumbar muscles, which leads to the symptoms of lumbar pain.