MBLAQ's Lee Joon held a sparring match with a former national Korean boxing athlete.

During the recent filming of MBC's 'Idol Manager', the MBLAQ members each participated in sparring matches with a challenger of their choice.

MBLAQ discussed holding an event for their fans in celebration of the group's 3-year anniversary on October 15, and MC Park Kyung Lim suggested revealing their abs. The MBLAQ members then went to do some circuit and sparring training to build their abs.

The sparring matches were held in a format where the members got to pick their opponents by saying, "You, come out." Mir picked Seungho, while Thunder chose G.O. However, Lee Joon surprised everyone by fearlessly picking their boxing trainer, a former national boxing athlete, Kim Ji Hoon.

After hearing that his opponent is a former national athlete, Lee Joon replied, "I'm also the national representative of dance."

The comical sparring match between the trainer and Lee Joon will be revealed on this week's episode of 'Idol Manager', airing on September 7 at 6PM KST.

Source+Picture: My Daily via Nate