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FitBall Ab Crunch

2H - FitBall Ab Crunch

[FitBall Ab Crunch]
大大個fitball自己買左唔識點用?
好多人都話腰酸背痛用fitball最好, 其實唔止拉筋有用, 做訓練都一流架!
今次分享一個簡單嘅Ab Crunch捲腹動作, 唔講笑, 都攰攰地架, 兄弟姊妹們都可以一試!