Hong Jin Young says she practiced alone for 15 hours as a trainee on 'Unnies' Slam Dunk 2'

"I am afraid of the solitary room. I used to practice singing locked up in one for 15 hours when I was a trainee,"said Hong Jin Young.

She went on shuddering at the thought,"Every time I went to go get a drink of water or use the restroom, I would always get asked 'Where are you going? Why did you come out?'"

 Hong Jin Young added,"The rigorous training continued when I turned 21-years old, as I prepared for'Love Battery.'"

"I even practiced winking for eight hours a day and now I wink without even thinking, it just happens naturally,"making the viewers laugh.

source: naver news