‘If you can’t lose weight, you’re cut’: BTOB’s Lee Chang-sub reveals harsh K-pop rules

A candid YouTube discussion featuring Lee Chang-sub of K-pop boy band BTOB has reignited debate over K-pop’s long-criticized weight standards, with the singer revealing that trainees could be cut simply for failing to meet strict targets. In a video uploaded Friday to his YouTube channel thischangsub, Lee Chang-sub appeared alongside Park Cho-rong and Son Dong-woon — all former Cube Entertainment artists — to discuss the broader K-pop idol training system. When asked about company rules and culture, Park said, “There were evaluations every weekend,” describing a system that constantly assessed trainees’ progress. Lee elaborated: “There were weekly and monthly evaluations. The weekly ones checked what you practiced, but the monthly evaluation was basically a survival test — deciding whether you stay or get cut.” Both artists described the process as emotionally intense. “It was really terrifying,” Park said, while Lee added, “You had to go through a nerve-wracking month.” The most shocking detail, however, came when Lee spoke about weight requirements. “People w

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