ATEEZ member San, now known powerful stage presence, opened up about how he built up his muscular physique. The K-pop star shared the story behind his physical transformation on Saturday's episode of MBC's variety show "The Manager," which offered a glimpse into ATEEZ's daily life. San's physique has drawn particular attention this year following the release of ATEEZ's "BAD" in June. A choreography sequence performed by San near the end of the song, nicknamed the "chest dance," generated buzz among fans. During the episode, San headed to the gym, where his manager said working out has become an almost daily routine. "San is really serious about taking care of his body, so he works out almost every day," the manager said. "He even works out every day when we're staying at hotels." But San said his muscular build did not come naturally, recalling his slender frame around the time of his debut in 2018. Fellow ATEEZ member Hongjoong said San had been self-conscious about his body when he was younger. "San had a complex about it when he was young," Hongjoong said. "That's why he worked out incre