After School members Kahi and Nana recently made guest appearances on the popular variety show, "Quiz to Change the World". The two singers revealed very different concerns about their body image.�Nana, who debuted as a model, shared her unlikely concern, "I am worried about my belly fat." Meanwhile, Kahi confessed her own worries by saying, "I tried to get rid of my abs, but they keep appearing." Since Kahi's body is deemed as ultra-sexy, she caused the ladies in the audience to groan with disbelief and envy. It's pretty hard to believe that these ladies have body image concerns, but it seems like not even celebrities can avoid them. Source: Newsen