Balance Ball Chair入手~~ 现在有25% off
[url=http://www.amazon.com/Gaiam-Balance-Ball-Chair-Black/dp/B0007VB4NE/ref=sr_1_1?s=sporting-goods&ie=UTF8&qid=1440377594&tag=1400474344-20&sr=1-1&keywords=Gaiam+Balance+Ball+Chairs]http://www.amazon.com/Gaiam-Balance-Ball-Chair-Black/dp/B0007VB4NE&ie=UTF8&qid=1440377594&sr=1-1&keywords=Gaiam+Balance+Ball+Chairs[/url]

有趣。 有人直接坐球上么

Base固定的怎么起到锻炼效果？

确实，我试过，感觉没有任何效果。没有那个base也许还有点儿用

Base固定的怎么起到锻炼效果？dupont2009 发表于 2015-08-24 20:21 PM [url=http://forums.huaren.us/showtopic.aspx?topicid=1876738&postid=68864621#68864621][/url]

refer link不注明，锁id了