MBLAQ's Lee Joon left the 'Running Man' cast in awe, as he showed of his jaw-dropping flexibility on the July 22nd broadcast of the London Olympic Special of SBS's 'Running Man'.

On this episode of 'Running Man', the cast went up against seven idol group members including, Super Junior's Eunhyuk, MBLAQ's Lee Joon, 2PM's Nichkhun, CNBLUE's Jung Yonghwa, ZE:A's Im Siwan, T-ara's Eunjung, and B2ST's Yoon Doo Joon.

The two teams competed against each other in a variety of activities testing their athleticism, one of which was playing a game of volleyball on a trampoline.

As the 'Running Man' cast and the idol group team began warming up for the volleyball game, MBLAQ's Lee Joon surprised the cast with his astonishing flexibility, as he did a full split in mid-air multiple times. Siwan also showed off his superb athletic skills, as he flew up into the air on the trampoline and performed a back flip.

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