Dawdler exceeds love certainly this walks, sit move, station is worn also the good method of can thin body.

 
  • 坐姿时腿弯曲的地方要保持90度,有一部分力量会集中到腿上,而不是全部让腰来受力,腰才不会酸痛,角度不够可以垫书。
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