K‑pop idols undergo dramatic physique transformations during South Korean military service

South Korean male idols have attracted attention for marked changes in body shape while serving compulsory military duty. Photos of Cha Eun‑Woo revealed a notably heavier, more muscular look compared with his pre‑service appearance. Similar transformations were highlighted for Ok Taecyeon of 2PM, who reached a record 99 kg during his enlistment from 2017‑2019, and for EXO’s Kai, whose post‑service photos show a pronounced six‑pack and broader shoulders. BTS’s V also documented a steady weight gain from 61 kg to around 80 kg, aiming for a stronger physique after enlistment. Observers note that the Korean armed forces act as an unexpected training ground that reshapes the visual image of many leading K‑pop stars.