During a November 4th interview with Newsen, Ahn Jae Hyun revealed that he is the type to gain as much weight as he eats. He said, "I am always aware of my figure." The actor gained his popularity through his chic role on SBS' 'You Who Came From the Stars' and was noticed for his boyish looks and contrasting deep voice. 

He told Newsen that he took special care of his body because of his career as a model and even tried starving as a method of losing weight. Ahn Jae Hyun said, "During a fashion show, there was a time my hands were shaking because I didn't eat. I thought I was going to faint, so I had one roll of kimbab before going on the stage. When I look back at it, I think the male models take care of their bodies more than female models." 

The model-actor also revealed his method of dieting. He said, "When I gain weight even just a little I can feel it. When I take pictures, I can see it in the final result. I go back and forth between exercise and controlling my diet to lose weight. When I am on a diet, I usually eat fruits that are in season or brown rice, and I stay away from carbs. Especially sugar, butter, eggs, and flour. I can never have bread." 

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He continued, "I realized that health is really important after I started acting. I stopped using the starvation method, and I try to eat nuts. When I lose stamina, everything goes downhill, so I'm trying to eat consistently." 

Meanwhile, model-actor Ahn Jae Hyun is to be featured in the newly releasing movie, 'Fashion King,' as Won Ho, the prince of the high school.