Now that the first digit has changed from 1 to 2, my stamina isn't what it used to be.

Won-hee laments that her stamina isn't what it used to be, saying that her body feels different now that her age has changed to the next digit.

Jang Do-yeon’s remark asking what the young people were talking about was the absolute highlight.

Seeing those young kids already worrying about their stamina makes me feel just like Jang Do-yeon's mom.