Trainer Yang Seung Chi praised Kim Woo Bin's hard effort.
On the August 22 airing of MBC's 'Radio Star', Yang Seung Chi, Jay Park, Jung Chan Sung, and Kwon Hyuk Soo joined as the guests.
During the talk, Yang Seung Chi, who's the body trainer for many stars including Kim Woo Bin, Sung Hoon, and BTS' Jin, named Kim Woo Bin as the one with the most dramatic change in physique.
He explained, "Kim Woo Bin had very narrow shoulders and was similar to Kim Guk Jin when I first met him. But he stuck it out until the end whenever I made him do a workout."