Hellow guys, Welcome to my website, and you are watching 존 레이티 교수 "달리기, 줄넘기 등 유산소 운동하면 똑똑해지고 스트레스 사라져요" ㅣ조선일보ㅣ청소년ㅣ시험기간ㅣ운동. and this vIdeo is uploaded by 세이프키즈코리아 at 2022-04-25T04:05:39-07:00. We are pramote this video only for entertainment and educational perpose only. So, I hop you like our website.