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

 
  • 坐姿時(shí)腿彎曲的地方要保持90度,有一部分力量會(huì )集中到腿上,而不是全部讓腰來(lái)受力,腰才不會(huì )酸痛,角度不夠可以墊書(shū)。
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