On February 17, Jung il Woo appeared on SBS' television show 'My Little Old Boy' as a guest.
During the talk, Jung il Woo mentioned that he had gained about 14kg (31lbs) while serving his national mandatory duty as a public service worker.
Jung il Woo said, "I think I let myself too loose throughout the time when I was serving my duty, because I was no longer on screen. I gained about 14kg. But I managed to lose the same amount of weight in just around three to four weeks recently."
![Jung il Woo](http://img.sbs.co.kr/newimg/news/20190221/201284900_1280.jpg)
He laughed and said, "It wasn't solely for the money, of course. I just felt responsible to make myself look like the character that the viewers were expected to see."
![Jung il Woo](http://img.sbs.co.kr/newimg/news/20190221/201284899_1280.jpg)
He said, "I consumed almost zero carbohydrates except sweet potatoes. I had chicken breasts and eggs every meal. I worked out two to three times a day, and walked a lot."
![Jung il Woo](http://img.sbs.co.kr/newimg/news/20190221/201284901_1280.jpg)
(Lee Narin, Credit= SBS My Little Old Boy)
(SBS Star)