2AM's Changmin may not look like a celebrity according to Tak Jae Hoon, but he definitely has the muscles of one.

On the April 13th broadcast of SBS' 'Star King', the guests were asked to find the real wrestling champion from among the contestants leading to a friendly athletic competition. MC Kang Ho Dong then asked Changmin who is known for his six pack to show off his muscles.

Changmin shared, "I have celebrity muscles so I only need to work out my upper body. I have muscles that are meant to be seen." He then lifted up his pants to show off his muscular calves, surprising viewers. But upon competing with a 120 kg contestant in a battle of hip strength, Changmin immediately quit after one second into the match and fell on the floor in pain, bursting viewers into laughter.

Changmin and Jinwoon also showed why they're the 'variety show idols' with �hilarious dance segments.