Song Joong Ki
Song Joong Ki is gaining weight for his upcoming film Facebook

Song Joong Ki is undoubtedly a dedicated actor. The 30-year-old actor is reportedly undergoing training for his role in the upcoming movie, Battleship Island.

Celebrity fitness trainer Danny Joe took to his Instagram account to share an image with the Descendants of the Sun actor. He captioned the image: "I was fortunate enough to train the one of the biggest star in Asia, Song Joongki. I am a living proof that when you do good things for other, it will ALWAYS come back to you. Be KIND, work HARD and AMAZING things will happen."

Joong Ki shot to fame after starring in the hit drama as Captain Yoo Shi Jin. He was seen along Song Hye Kyo, who reprised the role of doctor named Kang Mo-Yeon.

Previously, the 34-year-old actress had praised Joong Ki at Chengdu fan meet. During the interaction session, Hye Kyo gushed about Joong Ki. She said: "I had a sense of Song Joong Ki's popularity through the internet and news articles, but actually coming here and seeing this for myself makes me feel happier and more nervous than him."

"I was looking forward to meeting him since so many people told me good things about him, and it turned out that he was an even better person than I'd thought. He's very sincere and thoughtful when filming. I think he's really cool," she added.