What is the most comfortable place in the living room? The answer is definitely the sofa! Are you used to watching TV on the sofa and sleeping on the sofa all night? Do you like to nestle in the sofa on weekends, a nest is a whole day? When we feel tired, to the soft sofa a lie, fatigue suddenly all gone. But some people do not know, the sofa as a bed will lead to many health problems. First, why sleep on the sofa will lead to spinal lesions? Now the material of the sofa are very soft, once people lie on it will sink because of the role of gravity, easy to cause the curvature of the spine. Even when lying flat, the spine will be bowed to the back, lying on the side, then easy to lead to side convexity. Over time, the spine will become deformed. Some hunchbacks are easy to form and can lead to scoliosis. In addition, people sleeping posture is not fixed, but rolling back and forth, this unconscious action helps to correct the small joints of the spine mild misalignment, reduce the daytime activities resulting from the compression of the lumbar intervertebral disc. But the sofa is generally more narrow, sleep on the side can not turn over at will, not only can not adjust the minor misalignment of the small joints of the spine, but also make the limbs and waist and back to maintain a fixed rigid posture, easy to cause spinal lesions. Second, cervical spondylosis is how to sleep out? Because the sofa is too soft, people lying on it, will make the spine is bent, so that people feel back pain. Long-term this will cause the body to sink in the middle, the upper body muscle relaxation, the lower muscles are strained, easy to cause lumbar muscle and bone strain, and even affect the health of the cervical spine. There are some people lying on the sofa like to pillow their heads on the armrests, so that light is easy to pillow, heavy will get cervical spondylosis. Third, long sleep sofa will also compress the blood vessels and nerves? Now the sofa is elastic, although some people feel comfortable, but people sit on it or lie too long, it will cause abnormal muscle pulling, collagen overgeneration, because collagen is originally connected to the fibrous part of the muscle tissue, it can play a role in protecting the muscle, but once the overgeneration, it will cause the squeeze on the blood vessels and nerves so that the muscle is easy to atrophy. Therefore, the sofa is not suitable for sedentary, and should not sleep on it for a long time. The sofa is best not to sit or lie for a long time, generally sit or lie on the sofa do not exceed an hour. Fourth, then, what kind of bed is healthy to sleep? Previously, medical science is generally recommended hard bed, as long as the hard bed, appropriate pad a layer of cotton mattress, the body does not feel very choked can. Now, the recommended mattress of medium hardness or more. Specific requirements are to avoid too soft, such as the use of very thick sponge as a mattress is risky. Especially small children, if long-term sleep in a particularly soft bed, is going to affect the physiological curvature of the spine, resulting in a smaller physiological curvature, the impact on the growth and development of children. A bed that is too hard may also cause pain and discomfort due to local blood circulation disorders caused by compression of the soft tissue next to the spine, which should also be avoided. In order to make your spine healthier and avoid premature lumbar strain, cervical spondylosis, lumbar disc herniation and other diseases, do not nest on the sofa for a long time, starting from sleeping on a good bed!