据说跑步时脚后跟不着地即可~
所有跟帖:
• a good pair of shoes is a must. walk before you run. -acac- ♂ (0 bytes) () 10/19/2012 postreply 17:26:26
• heels usually touch ground first. -acac- ♂ (0 bytes) () 10/19/2012 postreply 17:29:11
• a good pair of shoes is a must. walk before you run. -acac- ♂ (0 bytes) () 10/19/2012 postreply 17:26:26
• heels usually touch ground first. -acac- ♂ (0 bytes) () 10/19/2012 postreply 17:29:11