On the March 18th broadcast of 'My Ugly Duckling', Kim Jong Kook opened up on his obsession with going to the gym. He said, "When I was young, I broke my leg. Apparently, when you break your leg, the bone lengths can differ as you grow older. In elementary school, I wrestled and during middle school, I used to do taekwondo. Without any correct information, I just exercised recklessly."

"As it all happened, my lower back became crooked which eventually led to me having a herniated disk in high school. I remember back in high school, because of the pain, I couldn't get off the bus and ended up going all the way to the endpoint/last station." He continued, "So when I went to the hospital, the doctor told me to try working out and as I did that, it got way better."

Kim Jong Kook finished by saying, "To be honest, I've gone beyond the rehabilitation stage and need to cut down on working out. But I'm anxious/uneasy habitually and I'm sure experts will tell me I'm wrong but what can I do if I'm feeling this way?"

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