All 12 EXO members guest starred on August 13 radio broadcast of 'Super Junior's Kiss the Radio.'
According to a report on Allkpop, DJ Ryeowook told Xiumin during the interview, "You've gained a lot of muscle recently."
Xiumin replied, "It's not that I'm gaining muscles, but the muscles are showing up because the fat is going away."
His fellow members added, "Xiumin lost a lot of weight. The fans will be surprised if we revealed his weight. It doesn't even reach 60 kg (133 pounds)."
Ryeowook then asked him to reveal some dieting tips and Xiumin shared, "To be honest, I barely eat. And rehearsing for the new song 'Growl' made me sweat a lot, so naturally, I lost weight."