從開始鍛煉到現在，覺得跑步使我的膝蓋強壯了，以前膝蓋疼的得4腳著地爬樓，現在輕鬆跑上去。

來源: taoqibao 於 2014-08-31 18:16:45 [舊帖] [給我悄悄話] 本文已被閱讀：次

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