On the July 15 broadcast of OnStyle reality show "Jessica & Krystal", younger Jung sis Krystal talked about how extremely she has gotten ever since f(x) made their comeback with their latest hit "Red Light".
Blonde Krystal shared, "I sleep a maximum of three hours? There was even a time I stayed up all night and then went to a music program. It's been a long time since I've had a schedule every day," referring to f(x)'s long hiatus prior to releasing "Red Light".
She continued, "That's why I'm not used to it now and feel overwhelmed."
Krystal then put the spotlight on her big sis Jessica as she divulge what the Girls Generation member is like when she doesn't have a hectic schedule, "My sister does not like moving. She's always lying down. On days with no schedules, she lies down and doesn't come out until the evening. Our parents' athletic genes all came to me. In the past, I only had strikes in bowling. Even for things like high jumps, I was number one a lot."