Isn't it too bad for the bed to be too soft?
From the physiological, teenagers are in the stage of development, the skeletal system is not yet mature, bone contained in the inorganic material, soft and elastic bed, easy to cause deformation and the formation of bone deformity, sleep so soft beds, especially supine, will increase the lumbar physiological curvature, influence the development of bones and muscles, go down for a long time around the spine, ligaments and intervertebral joint load is overweight, cause lumbago. Ideal and healthy beds should be paved with planks and cushions, with a certain degree of hardness, so that the hips do not sink excessively.
With the improvement of people's living standard, sofa bed, sponge cushion and other bedding are becoming more and more abundant. This is very comfortable, but it is harmful to the body, especially young people.
