你跑步的時候，是用腳跟著地，還是腳掌著地？如果是用腳跟，那是姿勢錯誤。這會讓你膝蓋受傷。

来源: vw308 于 2019-01-24 07:03:45 [旧帖] [给我悄悄话] 本文已被阅读：次

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