She can consume enough food for more than a dozen adults in a single day — but her latest health check left fans stunned.
South Korean mukbang YouTuber Tzuyang, famous for devouring up to 30,000 calories in a day while maintaining a petite frame, revealed that she weighs just 45 kilograms (about 99 pounds) and has muscle mass comparable to that of a teenage high school student.
On March 1, Tzuyang uploaded a video titled “What is the weight and fitness level of someone who eats 30,000 calories a day? I got an X grade” on her YouTube channel V-log Tzuyang.
In the video, she underwent a comprehensive physical fitness test at a certified fitness evaluation center, including treadmill endurance, grip strength and sit-up measurements.
Tzuyang said she had previously maintained a weight between 46 and 48 kilograms before bulking up to 58 kilograms through exercise. However, after she stopped working out entirely, she said she lost 14 kilograms rapidly.
Tzuyang / Captured from Tzuyang’s YouTube channel
“I thought I would get Grade 2,” she said confidently before the test results were revealed. Instead, she received Grade 3.
An official at the center reviewed her InBody scan — a body composition analysis commonly used in South Korea — and delivered an unexpected assessment.
“Your muscle mass is extremely low. At this level, it’s comparable to a high school student in adolescence. You need to start weight training,” the official said.
When Tzuyang said, “If I don’t work out, the weight drops instantly,” the official said, “As you get older, muscle mass decreases even faster.”
The results sparked fresh curiosity about the health realities behind mukbang, a South Korean-born online broadcasting trend where hosts consume large quantities of food on camera while interacting with viewers. While the genre remains hugely popular globally, it has often drawn debate over long-term health effects.
Tzuyang, one of Korea’s most recognized mukbang creators, previously showcased her astonishing appetite on the MBC variety show “Omniscient Interfering View.” During the broadcast, she consumed approximately 37,000 calories in just 18 hours — about 18.5 times the recommended daily calorie intake for an average adult woman.
Despite such feats, her latest test results suggest that extreme calorie intake does not necessarily translate to physical strength or muscle development.
The video has since fueled discussions among fans about metabolism, muscle loss and the importance of resistance training — especially for creators whose content centers around high-volume eating.
This article from Xportsnews is adapted by a generative AI system and edited by The Korea Times.
