Lee Kwang-soo was humiliated by a sudden injury.
On December 2, SBS Running Man', 'Be Lower and Iron Peak' Game was held.
This was a difficult Game to hold the iron rod with the power of the ship and turn the body around.
Yoo Jae-Suk turned a whopping back and succeeded in crossing a 60cm-high iron rod - a shot that kept the remaining challengers tight.
The next gallenger was Lee Kwang-soo, who managed to turn but was sent off with critical injuries that were beyond control.
About Running Man
Running Man is a South Korean variety show, formerly part of SBS' Good Sunday lineup. It was first aired on July 11, 2010.
Running Man was originally classified as an "urban action variety"; a genre of variety shows in an urban environment.
 Wikipedia