閃腰 is because the muscles on back are not strong.

來源: Morning3evening4 於 2012-02-14 06:43:53 [] [博客] [舊帖] [給我悄悄話] 閱讀數 : (159 bytes)
回答: 萬一閃了腰，不是虧大了？ 由 H&CMom 於 2012-02-13 20:03:43

That is what I learned from Physical Therapist. And with some excise designed to strengthen the muscles, I am almost 100% recovered from herniated disk.

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