Kim Kang-min, Shin Bo-mi-rae, Kim Sik, and Jo Jin-hyeong lean down to pick up their boulder on

Many competitors had a long history of athleticism before going on Netflix’s Physical 100. So it’s interesting to see where they started. Kim Kang-min looked different when he was competing as a bodybuilder in 2015.

[SPOILER ALERT: This article contains spoilers for Physical 100 episodes 1-8.]