人体的构造非常微妙,为了防止外力冲撞及保持人能跳高、跳远、爬山、穿越障碍等灵性,有一套类似弹簧垫的“缓震装置”。有了这套装置,人能够行动自由,挥洒自如,免受侵害。这些“缓震装置”分布在人体下列部位:脚脚的骨骼使脚背上凸,脚心下凹,形如拱桥,解剖学上叫“足弓”。足弓 The structure of the human body is very subtle. In order to prevent external forces from colliding and keeping people from jumping high, long jumps, climbing mountains and crossing obstacles, there is a set of “cushioning devices” similar to spring pads. With this device, people can move freely and freely, from infringement. These “cushioning devices” are located in the following parts of the human body: the bones of the feet make the instep convex, the instep concave, shaped like an arch, anatomically called “arch.” Foot arch