Because when tiptoe, the bilateral muscle of calfs can contract and squeeze, will promote the exerciser by the return of lower extremity blood, accelerate blood circulation, prevent varicose veins.
因为踮脚时双侧小腿后部肌肉的收缩挤压，会促进锻炼者下肢血液的回流，加速血液循环，可防止下肢静脉曲张。
It can not only carry out circulation packing, but also realize squeeze packing, and secondary packing can be done by opening the closing mechanism in demand.
并且既能实现循环充填，又能实现挤压充填；必要时打开关门机构可实现二次充填。
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