How to choose the firmness of the mattress?

How to choose the hardness of the mattress has always been a problem that troubles us. Every time we make this choice, we are in a dilemma. Then we will share some real experience about mattress selection for you. I hope It is helpful for everyone to use as a reference! What are the disadvantages of a hard bed? The concluding remark is that everyone should pay attention to it. You can sleep hard, but the key is to sleep on a hard 'bed' instead of using 'hard' as a bed. If the 'hard board' is used as a bed, only the head, back, buttocks, and heels are needed to bear the weight of the whole body. The spine is in a state of tension and needs to be supported by the small muscles around the spine, so it cannot be reached during sleep. To the effect of relaxation, it will aggravate fatigue and cause back pain. Just like the pressure near the pelvis, it is easy to compress the nerves, which is not good for the body. There is not only theoretical analysis but also experimental evidence behind it. The literature shows that moderately firm beds are more effective at reducing chronic pain and reducing excessive stress than very firm mattresses, and many experiments have shown that sleeping in a well-designed bed improves both sleep quality and comfort. On the other hand, it should be reminded that a very soft bed may make it difficult for you to turn over and make you very tired. When buying a mattress, do you rely on feeling? I used to buy mattresses from shopping malls, and I chose a mattress that looked good. To my surprise, I just bought a latex mattress probably because I was heavier and collapsed badly after 2 years of sleeping, so I switched to the most expensive and hard bed... Meta-analysis of 24 studies found , not to mention lying down to sleep in a shopping mall, even a night's sleep is not a good way to judge whether a mattress will still give you a better experience. Which mattress gives a good impression? One of the experiments of 75 people compared mattresses made of spring, latex, polyurethane and other materials. Volunteers reported their comfort level after sleeping for 1 minute. The results found that they often had higher hardness. , Easy to turn over mattress, subjective comfort is better. That is to say, sometimes the bed you bought is not very accustomed to when you just slept. Maybe after you have slept for two months, it will feel very comfortable and good for you, so you might as well be a little more patient. Another point to mention is sobriety. I have also seen the author of an article reminding that some elderly people go to the hospital bed because they think the bed is too soft and cannot sleep. A firmer bed may be better tolerated, so it depends. In general, it is more reasonable to be more rigid.