Song Kang and Jinyoung couldn't help but gush over their fellow "Sweet Home" Season 2 cast member as they talked about their experience filming the Netflix original series.

Joining them are Go Min Si, Lee Jin Wook, and Lee Si Young, who also dished on never-before-heard stories about their co-stars.

Posted by Netflix, the cast members participated in a challenge called "Confession," where they got to answer random questions.

Song Kang, Jinyoung Impressed by Lee Si Young's Built

Go Min Si teased Song Kang about being too conscious of his body and would often catch him looking at himself in the mirror.

According to the actress, the South Korean heartthrob would "flex his muscles" during their downtime on the set.

Hearing this, the actor then mentioned Lee Si Young's dedication, especially to her body.

Other than her Instagram posts where she flexes her amazing body, Lee Si Young once revealed the secret to her ripped physique.

Besides hitting the gym regularly, she also watches what she eats and makes sure to include protein and carbs in her diet.

"For protein, I eat tofu, beef, eggs, tuna, beans, and buckwheat. I always try to refuel right after my workout, and when I'm running short on time, I drink a protein supplement instead. Those are sauteed tomatoes with olive oil in the picture. I like it better with the oil because it's more satiating," she said, as mentioned by a news portal.

Lee Si Young's diet also includes a bit of carbohydrate for post-workout refueling.

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Written by Geca Wills