There are many K-Pop idols doing extreme diet in order to have great body line. They want to stay slim so they will look great with any outfit on stage. Also, some idols do extreme diet in order to follow the rule in the company.
Among many extreme diets, some diets done by idols are being way over the normal ones. As reported by AllKpop, one extreme diet by Park Bom is by eating cabbage. She eats mostly vegetables with mainly cabbage in it. It makes her full and stops her from snacking.