Many people have the habit of napping. Napping not only to relieve brain fatigue, but also to replenish physical strength, to maintain health is of great significance, especially the elderly. However, for many white-collar workers, nap is a luxury, most companies do not provide lunch break time and conditions, can only lie on the table to take a nap. But a wake up, eyes hazy, fuzzy mind, neck pain and back pain, so uncomfortable. Why? It turns out that the jaw face down or sideways to the pillow arm lying on the table nap, so that the spine is reverse flexion or twisted bad posture. The cervical spine will be forward or lateral rotation, and the cervical spine should be forward convex normal physiological arc; if the side to the table, the cervical spine is forced to rotate 450-900, the cervical spine and neck muscles are bound to be involved. After waking up from a nap on the table, the most obvious feeling is the stiffness of the neck, there is a “pillow” kind of discomfort, cervical muscle spasm, head to the affected side, shoulder shrugging; one or both arms appear radioactive pain or numbness and weakness. In the long run, the symptoms will get worse until they develop into cervical spondylosis, especially neurogenic cervical spondylosis. By the same token, the upper body is lying forward on the table, and the lumbar back is bulging, contrary to the normal physiological curvature of the lumbar spine convexity, resulting in excessive stretching of the lumbar back ligaments and muscles. Twisted position, even if the noon nap 15 ~ 30 minutes, will also produce neck pain and lumbar discomfort. Over time, the cervical and lumbar spine and its ligaments, muscles will strain, affecting the physiological balance of the spine, which in turn causes intervertebral disc degeneration and even protrusion, a series of cervical and lumbar spine diseases. Lying on the table nap not only does not benefit, but also affect normal work and life. Table napping more serious situation is caused by muscle tension in the upper limbs directly stuck nerve, resulting in hand paralysis. There are reports that Russian alcoholic men fall asleep after drunkenness, a sleep is difficult to wake up, longer to maintain a certain sleeping position, especially the side sleep. Compressed by the weight of the upper limb muscles and other tissues jammed brachial plexus nerve or important blood vessels, so wake up surprised to find that one upper limb has been paralyzed. The danger of napping on the table is thus visible and alarming. To avoid the occurrence of cervical and lumbar spondylosis, really need to nap, it is best to sleep on the table pad a soft pillow; or adjust the height of the chair, reduce the upper body down amplitude; and should not sleep for a long time. In addition, you can train to sit and sleep, sit and sleep better than sleeping on your back, it is best to choose a high-backed chair, with a U-shaped neck pillow, so that the cervical vertebrae have to rely on, it would be better. If the table nap after the symptoms of discomfort, you should go to the hospital as soon as possible, a clear diagnosis, timely treatment.