fitball 中文意思是什麼
fitball
解釋
核心球操-
Fitball originally called swiss ball ; this is a great tool for working those important core muscles. want a better posture try this one
健身球原名瑞士球，注重核心部位的鍛煉，是增強全身平衡控制能力的最佳選擇。
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