“Once the gloves go on, we really hit each other while filming. To the extent where our skulls rattled. While getting hit all day for a week, we filmed despite our faces swelling up. It got to the point later that I couldn’t move my neck. I continued filming on location by getting massages. There was almost no scenes where we could have used a body double. As it was my body and had to appear that way, I got into the boxing ring in almost all of those scenes” – 2012.3
Translation by : Lunagal
Sourced from @yeonseok_fanbot twitter
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