SBS's 'One Night of TV Entertainment' interviewed the actress on the April 18 airing. Lee Si Young, who's known for having a toned figure, was jokingly asked, "Do you even eat?" She responded, "I eat a lot."

Lee Si Young named running as the secret to her fit body and explained, "You don't need anything but running shoes. You can run anywhere and anytime with them."

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When asked about the method of shaping the lower belly for summer, Lee Si Young brought laughter, saying, "For the lower belly you should just poop... Sorry. I'm losing my mind because I haven't eaten [yet]." She continued, "Just stretching well help a lot."