Thin Yun Si-yoon lost 5kg again in a day. 45-degree sauna + 24-hour water cut effect (My Little Bird)

By GyeEun, Lee

Jun 22, 2025

Thin Yun Si-yoon lost 5kg again in a day. 45-degree sauna 24-hour water cut effect (My Little Bird)



Actor Yoon Si-yoon lost an additional 5kg in a day due to a single diet.

On SBS 'My Ugly Baby', which aired on the 22nd, Yoon Si-yoon's appearance on a 24-hour water diet 'to express the character in 'Model Taxi 3' was broadcast.

Yoon Si-yoon weighed herself as soon as she woke up in the morning. He was 177 centimeters tall, weighed 67.4 kilograms, and had a body fat percentage of 6.7. Seo Jang-hoon added, `If the body fat percentage is 6.7, there is almost nothing.'




Yoon Si-yoon is so thin that she wants to drink water. Today is the day of the water cut." He was on a 15-hour single diet. Earlier, Yoon Si-yoon said, "I want to give a feeling that feels so squishy that my skin feels close to it."The sea showed her greed to transform into a character saying ".

Thin Yun Si-yoon lost 5kg again in a day. 45-degree sauna 24-hour water cut effect (My Little Bird)
Yoon Si-yoon also squeezed the meal into anhydrous diet that did not contain moisture. Yoon Si-yoon said, "Oh, it's stiff. It's so good."I forced myself to eat under my own hypnosis. Since then, he has undergone high-intensity training to lose extreme sweat.

After returning home, I ran 'Totally dehydrated' on the plan. It was a challenge to an extreme sauna. It is a way to remove all body water from an extreme high-temperature and humid sauna. The temperature inside the bathroom rose to 45 degrees Celsius after turning on hot water in the bathroom sink and bathtub. Yoon Si-yoon struggled to get into the bathtub and went into holding it for 20 minutes. Yoon Si-yoon is exhausted, but "It's okay. Everyone else is doing it." He hypnotized himself again and succeeded in holding it back for 20 minutes.




Yoon Si-yoon led her red-cooked body to the shower booth right next to her, and soon she was surprised by cleaning the toilet and the bathtub. Shin Dong-yup was surprised, saying "That's great".

Since then, Yoon Si-yoon has lost 5kg and her body fat percentage has fallen to 3.6%. Yoon Si-yoon smiled at the satisfactory result even when he was exhausted.






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