crunch的动作,需要肩膀往腰的方向沉,就是只是上腹部的肌肉收缩,好像被人从前面打击一样,所以眼睛最好看天花板
回答: Just looking at the pics, i can feel sore in the neck and lower
由 -worldance-
于 2019-04-25 12:11:48
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