How to boost up your immune systemsApr 5, 2020kawamitsudcAbout the body, Body Functions Hi, How's everybody doing! I guess most of people stay at their homes and try to avoid corona viruses. I will show you how you can boost up your immune systems and avoid covid-19. Please watch a YouTube video! https://www.youtube.com/watch?v=i-mwdBrjC5Q