Actor Jin Seo-yeon announced a 3-month weight-loss goal of reaching 49kg after sharing an InBody measurement showing her weight at 60.17kg on September 28, 2026, according to Sports Seoul.
Jin Seo-yeon Announces 11kg Weight Loss Goal
Actor Jin Seo-yeon has declared a plan to lose 11kg over a three-month period. On September 28, 2026, Jin published her InBody body composition results on social media, writing that she had encountered an unexpected situation and was launching an 11kg reduction campaign targeting a weight of 49kg, as reported by Sports Seoul.
The shared measurement data showed a total body weight of 60.17kg. Additional metrics from the test included a body fat percentage of 21.1%, a skeletal muscle mass of 26.23kg, and a body fat mass of 12.70kg.
Contasting Past Diets and Routine Weight Management
This timeline differs significantly from a past weight-loss effort. According to Sports Seoul, Jin reflected on a previous experience where she lost 28kg within 40 days following childbirth, describing that earlier approach as a very unhealthy method of dieting.
The target of 49kg aligns with her established maintenance patterns. In a 2023 broadcast appearance cited by Sports Seoul, Jin explained that she typically maintains a weight of 48kg to 49kg when actively working on acting projects, and around 53kg during breaks, relying on long-standing exercise and lifestyle routines.
Early Progress in the Three-Month Plan
Measurable changes appeared quickly following the announcement. On September 29, 2026, marking the second day of the regimen, Jin posted an updated InBody reading showing her weight had decreased by approximately 1.2kg in a single day down to 58.95kg, per Sports Seoul reporting.
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