Demi Lovato strikes again! As the great Jiu Jitsu Ambassador and the grappling martial arts lover this time Demi’s showing us her favorite Jiu-Jitsu moves. How good is she you can check in a video below: https://www.instagram.com/p/BgC5ARTHT37/?taken-by=the_meal_plan_man Demi Lovato doing a slick armbar on BJJ Champion