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。

來源: vw308 於 2019-01-24 07:03:45 [舊帖] [給我悄悄話] 本文已被閱讀：次

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