BTS' V, Jungkook, & RM show off ripped abs and killer workout

South Korea's bodybuilding star Ma Seon Ho, long rumored to be BTS’s go-to trainer, gave ARMY the ultimate sneak peek in his latest vlog, featuring RM (Kim Namjoon), V (Kim Taehyung), and Jungkook (Jeon Jungkook) at the gym.