Wrong sleeping posture, sleeping bed is too soft or too hard, can cause the body’s muscles can not relax, in up to several hours of muscle in a tense state, equivalent to non-stop work, resulting in muscle anaerobic metabolism, and metabolism generated by lactic acid stored in muscle tissue, not excreted, there will be the next day when you wake up the whole body sore symptoms. Choosing a soft and firm bed as well as paying attention to the posture when sleeping can have significant therapeutic effect on relieving pain. It is recommended to go to the hospital for examination to rule out ankylosing spondylitis and other disorders.