Park Jung Min, who stars in Coupang Play's first original k-drama Newtopia with BLACKPINK's Jisoo, showcased his impressive weight loss with a video explaining the rigorous process he underwent.

Park revealed how he dealt with sadness in light of his appearance on Yoo In Na's radio show "You In Radio."

At first, the actor resorted to gaming but explained that it frequently aggravated his mood.

Instead, he turned to running to get in shape for his role in the action movie Humint for both therapeutic and weight-loss purposes.

"These days, I am trying to lose some weight for a photoshoot in the near future," Park said.

"I started running. It's been roughly three months, yeah. I wish I could say I was an Olympic athlete, but the truth is I run about six miles (ten kilometers) a day."

"My head clears when I run. At first, it was challenging. It used to be difficult, but now I can do it when I feel like I need a boost," he said.

"I can run six miles and don't even have problems with my mood."

Park revealed that he usually runs around 8 PM each night and that he rarely eats following his runs — a habit that helped him shed more than 37 pounds (17 kilograms).

When Yoo In Na asked if he eats or gets hungry after running Park answered: "No, I don't eat. I normally don't eat dinner so... But if I feel hungry I eat before running."

Fans have been particularly surprised by his dramatic transformation, which went viral on theqoo when fans put together before and after photos showing how much his appearance has changed.

Here's what Korean netizens are saying:

Although some were worried about the actor potentially developing joint issues from running every day, many just wanted an excuse to add some more cardio into their day.

Park Jung Min continues to impress audiences with his dedication to his craft, and fans are eagerly awaiting the upcoming premiere of Newtopia on February 7.