Singer G.Na revealed that her knees are in terrible shape due to all her practices for her “Oops” choreography.

On March 18th, the singer uploaded a photo on her Twitter and wrote “This was taken while shooting music video of ‘Oops’. I don’t think my knees are doing well… My poor knees were bruised because of the choreography! But the music video came out pretty, so I’m happy!”

The photo reveals G.NA is in the studio that was the background for her music video. She is managing a positive smile despite the big bruises covering her knees.

Netizens who saw the photo commented, “The great works you are showing are products of painful practices”, “I feel so sorry for her” and “Don’t get hurt!”