How to call soft and hard moderation? The simplest method of measurement is: lie flat, hand to the neck, waist and buttocks down to the thigh between the three obviously curved place to horizontally, see if there is a gap;, use the same method to try the body curve sag and the mattress between there is no gap, if not, it is proved that this mattress and people in sleep when the neck, back, waist, buttocks and the natural curve of the leg is apt to coincide, such a mattress can be said to be soft and hard moderate.
Everyone on the mattress soft and hard preferences are different, some people like to sleep hard bed, some people like to sleep soft beds, what hardness of mattress is good mattress it?
In Germany, 30 years ago, a discussion of whether a hard mattress or a soft mattress had been a good one, and that discussion had led to the participation of German Bachelors in ergonomics and the study of human sleep posture. The results of the study are: whether the mattress or soft mattress is not good for human health sleep, the right mattress should be a high elastic mattress. In other words, when the force is applied to the mattress, the mattress should be much lower and more supportive to the human body, and vice versa. This is because the human body is a curve, only in the high elasticity of the mattress can make the human body and back are supported, especially the waist to have a strong support, so that the body of the various departments relax and get full rest. Because the human spine is a shallow s-type, lie down need to have the appropriate hardness of the support, so the flexible mattress for the body's comfort and quality of sleep is essential. The choice of mattresses can not rely solely on the sense of self, too soft or too hard are not appropriate, but based on the difference between height and weight. The lighter weight of the bed, so that the shoulder buttocks slightly into the mattress, the waist is fully supported. The body weight is suitable for sleeping hard mattresses, the strength of the spring can give the body every part of the appropriate, especially the neck and waist is well supported. You can refer to the height, weight and mattress soft and hard table, which will be more scientific.