Take a look at this video which gives a good insight into what might be causing your pain and how to fix it with a foam roller..
此影片針對身體不同痛處,提出痛楚的原因並教授如何使同按摩滾筒以舒緩痛楚。
http://schwarzenegger.com/fitness/post/rehab-prehab-intro-to-foam-rolling-lower-back-pain-the-quads
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