BTS member Kim Namjoon aka RM has caused chaos on social media once again by posting a video of him working out in the gym. The black and white video shows the 29-year-old rapper pumping iron in the gym under the supervision of his instructor, wearing just a pair of shorts. This is the second time that Namjoon has posted a shirtless video of him working out. 

Sharing the video on Weverse, Namjoon wrote, "Have a great Chuseok Guys. I`m going to have fun working out too..." The Still Life hitmaker is a fitness freak, having dedicatedly starting to work out a few years ago. He often shares his workout routine on Instagram. This time, too, he shared his Chuseok special routine, but what drove fans into a frenzy was the video of him working out shirtless.