On the October 24 airing of MBC Everyone's 'Star Show 369,' one SISTAR member revealed that she is filled with anger.  

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MC Tak Jae Hoon said to the girl group, "Which member has a lot of anger?" and Hyorin raised her hand with, "I have a lot of anger.  There are times I go to the emergency room for no reason at daybreak."  Dasom explained, "If she can't express her anger, she gets ill."

It's always good to not hold things in!  Have little bursts every day, Hyorin.