Known for his chiseled upper body, MBLAQ's Lee Joon made a surprise appearance on�KBS 2TV's 'Qualifications of Men', in order to encourage the members who were on a mission to create a six pack.

In this episode, Lee Joon revealed a past photo and lifted up his shirt to show his current body. Furthermore he explained that he made his abs five years ago and didn't have to go on a diet because he was already so thin.

He replied, "With my skinny body I didn't diet, I just worked out a lot. Before working out I was 61kg (roughly 134lbs), but after exercising I went up to 72kgs (roughly 159lbs)".

He bragged, "A while ago I use to be called 'narrow shoulders' because my shoulders were so small, but now I'm not called that anymore".

In order to help the members exercise, Lee Joon taught them the choreography to Rain's "Love Song", SECRET's "Love is Move", and "It's War".

Check out his dancing clip below:


Source + Image: Naver