The general mattress will be divided into areas with different degrees of softness and hardness. Generally, there are 7 zones, 5 zones, 3 zones, etc. If your body is not very well-balanced, you may wish to choose a 7-zone mattress. The so-called 7-zone mattress is designed to meet the curve requirem

This article mainly discusses the relationship between BMI and sleep.

Choose a mattressShed bed:The biggest disadvantage is that the center is low and the four sides are high due to the pressure of the human body. When the braid is relaxed, the tension of the muscles on the lower back side is increased, and the body position of the head and neck is in a relatively ele

This article is about what to bring when you travel, and what the purpose and use of each item .