練胸肌時腹部會用力? - 健身

By James
at 2009-05-24T00:00
at 2009-05-24T00:00
Table of Contents
請問我再練胸肌ㄉ時後發現腹部會用力...那這樣是正常的嗎?還是我姿勢不對呢??
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健身
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By John
at 2009-05-26T12:48
at 2009-05-26T12:48
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