Click here for more articles by Kormedi.com. Singer Sung Si-kyung, who recently made headlines after losing 10 kilograms in just over two months, has revealed how he is maintaining his weight — and eggs are at the center of his diet. Sung said in a YouTube video posted on Aug. 12 documenting his food tour in Japan that he now eats “nothing but eggs” for his first meal of the day. “Even when I don't feel like eating my first meal, I try to make s…