Singer Sunmi revealed the reason for the increase.

"When you look at Sunmi, who appeared as a guest on JTBC's'Brother Knowing' that was broadcast on the 11th, Lee Su-geun said, "It looks much healthier than before." When she said, "I increased my weight," Lee Soo-geun praised him for doing well, saying, "He looks healthier and looks better."

"I was too dry at the time," said Sunmi. "When I was working as a'main character', I lost up to 41kg. I wanted to die, so I put it up to 50kg."

Sunmi, who was overly skinny, deliberately gained weight for health and fitness management, and succeeded in gaining 8kg and certified 50kg through SNS. Stern's healthy weight gained a big topic online.

On the day of the broadcast, Kang Ho-dong laughed by saying, "I don't have 41kg of memory in my life. I remember about 60kg."

[Photo = JTBC Broadcast Capture]

(SBS funE Reporter Sun-ae Kang)