The bed is the main tool for sleeping. From the perspective of health care, the design and manufacture of the bed should not simply pursue its gorgeous and chic, but should pay attention to its practical value and consider whether it conforms to the physiological characteristics of the human body and is conducive to sleep. At present, there is a very popular view that sleeping on a hard bed can sleep better than sleeping on a soft bed, which is more conducive to health, especially for the spine. However, this is not the case. Professor Thomas Laaser, a German plastic surgeon, believes that sleeping on a hard bed is not conducive to sleep or human health, because the hard bed surface can't meet the needs of human body curves, resulting in a serious burden and various injuries to muscles and spine.

It is not good to sleep on a hard bed. How about sleeping in a soft bed? It is customary to think that the wire spring bed is the most advanced and comfortable, but it is not, because no matter which posture is taken, the middle of the body will sink and the trunk will form an arc, which will overload the ligaments around the spine and increase the physiological curvature of the lumbar spine, which will cause low back pain for a long time; Especially for patients with osteoarthropathy such as lumbar disc herniation and proliferative spondylitis, sleeping in a soft bed for a long time will aggravate the symptoms. In addition, sleeping in a soft bed often makes the muscles trapped in the mattress unable to relax, and the internal organs of the chest and abdomen are easily oppressed and can not get enough rest.

It is obvious that the bed is too hard and soft. The ideal bed should be moderate in hardness, and the cotton pad with a thickness of about 10 cm has the best hardness. Such a thick cotton pad can meet the needs of human body surface curve, maintain the integrity and normal physiological curvature of the spine, and is beneficial to sleep and health.

Besides the hardness of the bed, we should also pay attention to its height. The height of the bed is generally about 40~50 cm, that is, it is better to be slightly higher than the knee of the sleeper. So you don't have to work hard to get into bed. You can stretch your legs and wear shoes when you get out of bed.

The bed should be wider. Generally speaking, its length is 20~30 cm longer than that of the sleeper, and its width is 30~40 cm wider than that of the sleeper, so that it can stretch when sleeping, which is beneficial to blood circulation and fatigue elimination.

Therefore, the bed must meet the following requirements:

First, it must conform to the shape of the body. Second, the pressure on the contact surface between the bed and the body must be dispersed to achieve an average. Third, the supporting force of the contact surface between the bed and the body must be balanced, and the gap should not be too big.

Judging from the above three conditions, the hard bed should have been eliminated long ago. But can a soft bed be realized? Not necessarily. This requires us to carefully observe, choose and even work hard to develop.

However, when suffering from lumbar spondylosis, bed rest, especially hard bed, can eliminate the pressure of load and weight on intervertebral disc and relieve symptoms.

For patients with lumbar intervertebral disc aging, sleeping on a hard bed is more meaningful: 80% patients can obviously relieve symptoms after non-surgical treatment; If you sleep in a soft bed, the compression of human body weight will make the middle of the bed lower and the height around it higher, further affecting the normal physiological flexion of the lumbar spine, causing contraction, tension and spasm of the lumbar muscles and ligaments, and aggravating the symptoms.

In addition, in addition to protecting the waist, sleeping on a hard bed is also very important for the elderly with heart disease. Generally, the rescue of sudden cardiac death is mainly at the scene. If it can be rescued in time, it can often turn the corner. The rescue method of heart compression must be carried out on the hard board, so it is best for the elderly with heart disease to sleep on the hard board.

Of course, sleeping on a hard bed does not mean sleeping on a hard bed. Some elderly people can't sleep on a hard bed because of the deformation of the spine caused by osteoporosis. Health experts suggest that bedding suitable for the elderly should keep the normal physiological lordosis of the lumbar spine when lying on the back, and keep the lumbar spine from bending sideways when lying on the side, so as long as it is a mattress with a certain hardness.