There is a kind of back pain called morning back pain, get up and move for a while and no pain. The spine is S-shaped, lumbar curve protrudes forward, lying down, due to gravity, the forward lumbar curve has a tendency to collapse backward, and the ligaments around the lumbar spine, muscles, and the role of the mattress can stop this trend, thus achieving a balance. But if the recent strain, mattress, etc., this balance is broken, the lumbar muscle due to overnight overstress, and thus the lumbar pain in the morning. The waist is the internal organs of the kidney, kidney deficiency (mostly kidney deficiency) caused by lumbago is mostly a kind of empty pain, self-conscious weakness of a kind of soreness, while the morning lumbago is not quite consistent with its performance. There is a simple way to find a dry towel, longitudinal two stacks into a long strip, sleep across the waist, you can increase the role of the waist curvature protrusion upward, so that the morning when not lumbago.