For some people, such as patients with cervical spondylosis, low back pain and lumbar disc herniation, as well as the elderly and children, sleeping on a hard bed is really good for the spine. If the mattress is too soft, it is easy to make the compressed part of the human body sink, which may cause scoliosis for a long time.
But the "hard bed" is not as hard as possible, and the hardness should be moderate.
A mattress with moderate hardness can conform to the contour of the body, allowing heavier body parts to fall into it, while also providing support for other parts of the body. The spine can maintain a natural S-shaped curve, so that all parts of the body can be relaxed and accurately supported.
Therefore, for the mattress, the internal support system should be "hard" to support the perennial oppression of the body, while the material of the surface in contact with the body should be "soft" to ensure sufficient elasticity and comfort. Ordinary people can choose a soft bed with a certain hardness.
Extended data:
Buy:
1, lie flat on the mattress, lie on your back for a while, and pay attention to whether the three obviously bent places of neck, waist and buttocks are sunken or not, and whether there are gaps when lying flat;
2. Take the posture of lying on your side and use the same method to test whether there is a gap between the protruding part of the body curve and the mattress. If there is no gap, it proves that the mattress can effectively fit the natural curve of the neck, back, waist and buttocks when sleeping;
3. When you press the mattress with your hand, you feel obvious resistance, and the mattress is deformed in the process of pressing. Such a mattress is of medium hardness. In addition, when the newly bought mattress is used, the packaging film should be discarded, otherwise it will easily breed bacteria and affect health.
4. The mattress can be selected according to the principle of 3∶ 1, and the mattress with a thickness of 3 cm is suitable for hand pressing1cm; The same is true for mattresses with a thickness of 10 cm, with a slight depression of 3 cm, and so on.
References:
People's Daily Online-Why do doctors advise people with "low back pain" to sleep on a "hard bed"?