Hellow guys, Welcome to my website, and you are watching [건강 플러스] 우리 몸을 지탱하는 뼈…튼튼하게 유지하려면? / YTN. and this vIdeo is uploaded by YTN at 2015-12-31T00:46:59-08:00. We are pramote this video only for entertainment and educational perpose only. So, I hop you like our website.