Is that really actor So Ji Sub in the past? It doesn't seem to look like the actor So Ji Sub that we all know.

Actor So Ji Sub's pictures as a slim swimmer during high school recently sparked the interest of many netizens. It caught many viewers off guard, because the student in the video seems to look extremely thin.

On the most recent episode of MBC entertainment program "Section TV Entertainment Relay" that aired on February 15th, celebrities were ranked based on the topic, "Chocolate Abs Stars."

During this segment of the show, an image of scrawny So Ji Sub, different from his current image, was shown. In the video of student So Ji Sub during his high school years, he was seen wearing a swimming cap and seemed to have a pale and slim body. This is much different from his muscular body now, where he shows off his chocolate abs that got him to be on this list.

During that time, he won 3rd place during the race, with a bronze medal around his neck. Swimming was one of the ways that he took care of his body, and this attracted many female fans' attention.