Girl group SECRET's Jun Hyo Sung revealed a secret about her body.

Today, on Mnet's "Beatles Code Season 2" aired today, Jun Hyo Sung made an appearance on the show and revealed her flat foot.

Jun Hyo Sung revealed that she once fell off the stairs and had to wear crutches for 4 weeks. At this, MC Tak Jae Hoon asked, "Why did you fall when you're not even trying to be funny?," and she replied "It's because I'm flat-footed" and tried to show her foot.

But she soon said, "Am I allowed to do this when I'm in a girl group?", and Tak Jae Hoon said, "Girl groups don't have feet?," making her reveal her feet.

She continued, "It really hurts if I wear heels for a long time because I'm flat-footed. And I also have an extra bone in my ankle."

Photo Credit: Mnet