Recently, Sung appeared as a guest on the channel 'Hello, This is Choi Hwa-jung'.
In the video, Sung was invited to Choi Hwa-jung's home and surprised everyone with his noticeably slimmer appearance.
Choi Hwa-jung complimented him, saying, "Why are you so thin?", "You've become sharp", "You're so handsome, it's almost unfamiliar", and "I'm slightly thrilled".
Sung Si-kyung continued the conversation while enjoying 'Sukiyaki' hot pot prepared by Choi.
Choi asked, "Don't you upload three YouTube videos a day? How do you manage that?" Sung, who runs the channel 'Meokultende', replied, "It's kind of like a habit. I do it like writing a diary."
Known as a gourmet, Sung praised Choi's cooking, saying, "You use Japanese seasonings well. It changes the flavor spectrum," and added, "In my opinion, Japanese cuisine uses 'artificial seasonings' with really fresh ingredients." Choi agreed, saying, "Artificial seasonings are actually made from natural ingredients like sugar cane."
Sung also revealed the behind-the-scenes of his '20-day diet'. He said, "When I was told I was a cosmetics model, everyone laughed. I wasn't confident either, but I couldn't let them down." This was his motivation to lose weight for a cosmetics ad.
Fans are amazed by Sung Si-kyung's transformation, commenting, "His face is half its size!", "The diet is a success!", "He only ate sweet potatoes and eggs for a month?", and "He looks like his prime days."
Meanwhile, Sung shared on his YouTube channel, "I truly experienced what hell is for 20 days. I need to manage this unhappiness to shape my body."
Reporter Na-yeon Cho, TenAsia nybluebook@tenasia.co.kr