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The navy special is the first co-ed series from 'Real Men', and it seems the tough actress, who's also an amateur boxer, took a bit of a beating. She posted the below photos to Instagram on July 30 with the message, "This isn't makeup. I got it while loading a K6 machine gun. If you get weak and load with two hands while resting it on your knee, you get bruises like this."
Lee Si Young added, "It was so fast, I didn't even know I was bruised. The circles are so pretty. They're scars of honor. Certain victory."
You can watch all the action when the 'Real Men' navy special premieres in August!