Management officials are admitting the actors are losing weight, lacking sleep and not eating right due to their popularity. Cast members Lee Minho, Kim Hyun Joong and Goo Hye Sun all have noticeably lost weight. Specifically, Lee Minho has lost 8kg (around 18 pounds) and Kim Hyun Joong has lost about 6kg (around 13 pounds) since production began. The agency is working to provide nutritional supplements and keep the cast well-fed but it's still not enough. Kim Hyun Joong's back injury from his car accident still ails him and he suffers from fatigue. Goo Hye Sun suffered a head injury during filming and was hospitalized for her injuries from a car accident not too long ago. A source from the set states that the shorts breaks they have are absolutely insufficient for all of the amount of shooting that they do. Everyone has admitted that because of the popularity and hectic shooting schedule, adjustments will not be easy to make, and the cast will continue to work effortlessly to please fans. It was painful to watch this week's episode 19. Everyone has dark circles under their eyes, gaunt sallow cheeks, pale skin... they need some much needed rest!