Suzy received the nickname 'drowsy Suzy' because of her tired condition on TV.

In SBS "Running Man" aired today, Ji Sung, Song Chang Ee, Ji Jin Hee, Suzy, and Wonder Girls Yubin were invited as guests.

On this day, during one of the missions, Suzy became tired and fell asleep on the way to the next stop. She tried very hard to stay awake, but her eyes slowly closed on her. Because of this, she followed after 'mung Ji Hyo' and became 'mung Suzy'.

Photo Credit: SBS