How to measure mattress hardness

He measures the firmness of the mattress
How do you call soft and hard moderation? The simplest measurement method is: lie flat and extend your hands flat to the neck, waist, and hips to the three obvious bends between the thighs to see if there are any gaps; Then turn over to one side, use the same method to try whether there is a gap between the depression of the body curve and the mattress, if not, it proves that the mattress fits the natural curve of the neck, back, waist, hips and legs when people sleep, so that the mattress can be said to be soft and hard. Everyone's soft and hard preferences for mattresses are different, some people like to sleep on hard beds, some people like to sleep on soft beds, what kind of hard mattress is a good mattress? Thirty years ago, there was a debate in Germany about whether a hard or soft mattress was better, which led to the participation of German ergonomics bachelors and the study of human sleep posture. The result of the study is that whether it is too hard mattress or too soft mattress is not good for human health sleep, the correct mattress should be a high elastic mattress. That is to say, when the force exerted on the mattress is large, the mattress should drop much and produce more support for the human body, and vice versa. This is because the human body is a curve, only on a high-elastic mattress can the human body and back be supported, especially the waist to have strong support, so that all parts of the human body relax and get full rest. Due to the shallow S shape of the human spine, which requires support with the appropriate hardness when lying down, a resilient mattress is essential for the comfort level of the human body and the quality of sleep. Choosing a mattress can not simply rely on self-feeling, too soft or too hard is not suitable, but according to the difference in height and weight. Those who weigh less sleep in a softer bed, so that the shoulders and hips are slightly sunk into the mattress, and the waist is fully supported. People with heavy weight are suitable for sleeping on a hard mattress, and the force of the spring can give every part of the body properly, especially whether the neck and waist are well supported. You can refer to the height, weight and mattress soft and hard comparison table, that will be more scientific.