ASTRO's Cha Eun Woo talked about the side effects of excessive smiling.
On the May 16 airing of MBC's 'Radio Star', Cha Eun Woo revealed he experienced temporary facial paralysis during a fan sign event. The idol explained that his fans love his smile so he kept smiling for a long time, leading to tightening of the facial muscles.
He now developed a method of relaxing his muscles. Cha Eun Woo said, "Nowadays, I wink and the tight feeling goes away."
MC Kim Gu Ra asked, "What about if you have facial paralysis while winking?" Cha Eun Woo winked, and said, "I can wink with my other eye."