人体不断地经受着来自行走、跑跳等动作与地面之间产生的反冲力的冲击和干扰,构成对人体,特别是大脑的威胁。但奇怪的是人体却可以不受损害。这是什么原因呢?原来,人体内有一套类似弹簧的缓冲结构,在起着很好的保护作用。呵护第一根“弹簧”:脊柱脊柱,俗称脊梁骨,它并非是直的,从侧面观察,其全长自上而下共有4个生理性弯曲,它们分别在颈、胸、腰、骶部,各有一个弯曲,其中颈曲和腰曲凸向前,胸曲和骶曲凸向后。这些弯曲组合在一起使脊柱就像一根大弹簧,既起维持直立姿势的作用,又增强脊 The human body constantly suffers from the impact and interference from the recoil forces generated between walking and running jumps and the ground, posing a threat to the human body, especially the brain. But it is strange that the human body can not be harmed. What is the reason? It turned out that the body has a similar spring-like cushioning structure, which plays a very good protective effect. Care of the first root “spring ”: spine spine, commonly known as the backbone of the spine, it is not straight, from the side view, its total length from top to bottom a total of four physiological bending, respectively, in the neck, chest, waist, sacral Department, each with a bend, which neck song and lumbar curve convex forward, chest and sacral curvature convex back. Together, these bends make the spine a spring, both to maintain the upright posture and to strengthen the ridges