做kettle bell的同學請介紹一下心得，跟普通啞鈴有什麽大的區別？

來源: viewfinder 於 2015-06-14 16:51:32 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

一定要請教練嗎?

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