Lee Si Young reveals how she trained to get fit body for action-thriller series 'Sweet Home'

Lee Si Young isn't new to the action-thriller scene.

With her new role in the upcoming series "Sweet Home," the actress continues to amaze audiences not only with her strong character but also her rippled and toned body!

"In the series some parts of my body are exposed... so I have to be really fit because I couldn't hide my body so I tried to work hard as hard as I could," she said in the series' press conference on Wednesday.

In a separate interview with the press, Lee Si Young said she tried to build her physique by doing push ups, pull outs, roll tires, and rope activities.

"I also received personal training. On top of that, I did primal primitive, so to speak, moves to show off my preparation but the director did a very good job capturing it on screen," she said.

READ: Here's everything you need to know about Netflix' new Korean thriller series 'Sweet Home'

According to the actress, her character Yi Kyung, a former firefighter, has "strong survival skills and is a very courageous character" as she fights off monster after monster in the series.

"Sweet Home" director Lee Eung Bok said that he couldn't think of another actress perfect to play the character.

"When I first met with the director, he said he wanted a female actor who could show very compelling action scenes and it was such an honor personally to have this role," Lee Si Young said.

"Sweet Home," an upcoming 10-episode VFX/SFX-heavy series based on a popular webtoon of the same name, revolves around a boy who moves into an old apartment complex called Green Home after his family died.

Before he could be consumed with hopelessness, monsters started taking over the world. Worse, humans were also turning into monsters based on their inner desires.

Directed by "Descendants of the Sun" and "Guardian: The Lonely and Great God" director Lee Eung Bok, the series will also feature Song Kang, Lee Jin Uk, Lee Do Hyun, Kim Nam Hee, Ko Min Si, Park Kyu Young and Go Youn Jung.

"Sweet Home" is set to premiere on Netflix on December 18. —MGP, GMA News