Comedian Kim Shin-young revealed that she experienced the yo-yo effect. Kim Shin-young is known as a diet evangelist who lost 38kg. Her recent status was revealed on the JTBC variety show "Knowing Bros," which aired on February 28.

In a pre-released clip before the broadcast, Kang Ho-dong cheered upon Kim Shin-young's appearance, saying, "Oh, Shin-young. Shin-young is back." Kim Shin-young responded to Kang Ho-dong's cheers and confidently appeared in the recording studio. The reason Kang Ho-dong cheered was that Kim Shin-young had lost 34kg through dieting, maintained a healthy body, and then gained some weight again.

Lee Soo-geun, Kim Young-chul, and Kang Ho-dong welcomed Kim Shin-young, saying, "Shin-young is back," and "Welcome back." During the broadcast, a subtitle appeared that read, "Shin-young, who changed 180 degrees, has come full circle 360 degrees!" which brought laughter. Kang Ho-dong introduced Kim Shin-young as "Shin-young is radio's Bronze Mouth." Kim Shin-young corrected him, saying, "Bronze Mouth is already over, and there are three years left until 2029. It's Golden Mouth."

Tae Hee proudly said, "If you receive the Golden Mouth, you become the youngest ever," and Kim Shin-young added, "I am the youngest female DJ."

The members of "Knowing Bros" asked Kim Shin-young to show a talent. Kim Shin-young did an impersonation of Lee Gye-in, introducing herself by saying, "I'm back again. Shin-young, who makes a living with her mouth, is back with her mouth wide open."

Kim Shin-young lost 38kg through a harsh diet in the past and has maintained that weight for 10 years. She has revealed her diet secrets on various variety shows, stating her belief that "People don't gain weight just by eating a lot. They gain weight by constantly eating without stopping."

Kim Shin-young's diet journey has inspired many, and her recent appearance has attracted great interest from fans. Through variety shows, Kim Shin-young shares her experiences and emphasizes the importance of a healthy life.

Kim Shin-young's return was welcomed by many. Her cheerful personality and honest remarks have had a positive impact on viewers. It is expected that in her future activities, Kim Shin-young will continue to motivate many people through her story.