She’s already done a lifetime of cardio!

Song Ji Hyo has been on Running Man for almost nine years—and she’s been doing so much running, her knees constantly hurt!

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On a radio interview, Song Ji Hyo said she began when she was 30 (Korean age) and she’s 38 now.

That’s almost nine years on a physically intense show, every week!

The constant exertion has taken its toll on her body, especially on her knees.

“I’ve run so much, my knees hurt!” — Song Ji Hyo

Running excessively is an essential part of being on the Running Man.

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Aside from running, she’s also engaged in other physically strenuous activities like jumping and getting tossed over a bar into water!

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Or breaking bricks with her hands!

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Or beating up her castmates!

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Or getting slapped!

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It’s not easy being the Ace of the team, but Song Ji Hyo has proven over the decade that she’s an essential part of the show!

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