Hard bed ≠ light board bed
The harder the bed ≠ the better for the spine

One-quarter to one-third of a person’s life needs to be spent in bed. If there is no external force to help the body "lubricate and cushion", the bones and bed board will be hard to resist, no matter how good the body is, there is a good way to sleep. The mattress is necessary.
A suitable mattress means: when we lie flat, it can keep the lumbar spine physiological lordosis, and the body curve is normal; when we lie on the side, it does not cause the lumbar spine to bend or bend, and it supports and protects the spine.
Sleeping on a bed that is too hard, the spine will be in a state of stiffness and tension, and it needs back muscles to support it, and it will not be able to achieve the desired relaxation effect during sleep. The normal physiological structure of the human body presents an S-shaped physiological curve from the side. If you sleep on a bed that is too hard, it cannot match the normal physiological curve of the human body. After a long time, it is easy to cause strain and aggravate back pain.
A bed that is too soft will not work either. A bed that is too soft will cause the spine to bend, and you will feel back pain in the short term, and it will also easily cause lumbar muscle and bone strain in the long term. For babies and children in the growth and development period, if they sleep in a soft bed for a long time, it may affect the development of their spine.
To keep your waist healthy, you should sleep on a moderately soft bed.
Choosing the right bed can improve the quality of sleep. In addition, everyone should pay attention to sleep every night, and don't stay up for a long time, so as not to get enough rest for the body. It will cause endocrine disorders for a long time, so as not to make people more and more vulnerable to diseases after their immunity declines.