預防駝背、肱三頭肌訓練- YouTube

Meg老師教大家如何預防駝背，消除拜拜肉. ... 健康好簡單2012-03-07 pt.1/5 駝背 by ttv 2,547 views · 1:35. Watch Later 椎間盤突 ...

www.youtube.com