Hellow guys, Welcome to my website, and you are watching 계단을 내려갈때, 올라갈 때, 등산을 할 때 무릎이 아프다면?_등산무릎통증, 무릎관절염, 무릎연골. and this vIdeo is uploaded by 운동힐러 Exercise Healer at 2020-06-27T07:50:26-07:00. We are pramote this video only for entertainment and educational perpose only. So, I hop you like our website.