Cong nian qing ren dao yin fa zu du shi yong de qiang xi xun lianCong nian qing ren dao yin fa zu du shi yong de qiang xi xun lian
yi zhou liang xiao shi,cong huan xing ji rou . guan jie . jie di zu zhi dao da zao guan jian gong neng xing ji li,cong ci yuan li xi gai teng tong ji tui hua,yong you bu yi shou shang . xing dong zi ru de shen ti = Functional training to strengthen your knees and life