Singer Sunday Reveals Battle with 'Buttock Amnesia' on Jaejoong's YouTube

Singer and musical actress Sunday has opened up about her struggle with a rare condition known as 'Buttock Amnesia,' garnering concern from fans.

In a video uploaded on November 30th to Kim Jaejoong's YouTube channel, 'Jae Friends,' Sunday revealed her condition in response to a question from Jaejoong.

She explained, "My buttock muscles lose their memory. The muscles don't work. I walk with a waddle. I suffered a lot because of this, and it still hasn't returned," sharing her difficulties.

'Buttock Amnesia,' also referred to as 'Gluteal Hamstring Control Disorder,' is a rare musculoskeletal condition often caused by prolonged sitting or lack of exercise, leading to weakened gluteal muscles.

Fans have expressed their support, with comments like "Cheer up, I hope you recover completely" and "I didn't even know you were sick. Health is the most important thing." Some netizens shared similar experiences, creating a sense of shared understanding.