Singer K.Will revealed that he lost 14kg in two months. In a video posted on June 18th on the YouTube channel 'Sister-in-law is K.Will,' he stated, "I lost 14kg compared to when I was at my heaviest. Currently, I have gained about 3kg back, so I am down 11kg overall." K.Will candidly shared his experience using two obesity treatments, Wegovy and Mounjaro, during his diet process.

K.Will explained that he used Wegovy but did not see significant results. He said, "When I was on Wegovy, I wasn't very determined to diet. I was just sad because I lost the taste for alcohol, and after stopping, I experienced rebound weight gain." He added that his weight increased from 86–87kg to 91kg before using Wegovy.

Afterward, K.Will started serious weight loss using Mounjaro. He explained the weight loss process after using Mounjaro, saying, "This time, my determination was different. On the first day, I didn't eat anything, and the next day I lost 3kg." He emphasized, "Supplements are just supplements," highlighting that success cannot be achieved by medication alone.

K.Will revealed that his diet method involved eating one meal a day combined with aerobic and strength training. He added, "I ate one proper meal a day and consistently did 30 minutes of 'Stairway to Heaven' and interval running of 1 minute running and 1 minute walking." He stressed, "You will never lose weight by just exercising. Diet must be combined," and "You need to increase muscle mass to prevent rebound weight gain."

He also shared that he received conflicting results from an 8-constitution test during his diet. One place diagnosed him as 'Geumeum constitution,' advising him to avoid meat, while another diagnosed him as 'Mokyang constitution,' recommending a meat-centered diet. K.Will said, "Since they were completely opposite, I ultimately decided to 'eat moderately without excess and exercise.'"

Finally, K.Will said, "In the end, dieting is a matter of confidence and willpower," and added, "This time, my mindset was different, so I think I succeeded. Now, I will try to maintain it well." K.Will's dieting experience is expected to motivate many people.