Actress Song Ji-hyo has been checked into the hospital for a sudden fatigue spell.

According to her reps on September 19th, Song has been in and out of the hospital for the past few days in between shootings. After an all-nighter of shooting on the 17th, her health had deteriorated and she needed to be checked into the hospital on the morning of the 18th. There doctors recommended for her to spend the rest of the day resting there, however she left to continue her shooting schedule. Then she had another all-nighter on the 18th, leaving her in a severely bad condition on the morning of the 19th. She has hit rock bottom in terms of her health and thus the shooting of her show "Running Man" even had to be canceled. She will be spending all day to rest.

Another rep added that from an agency's point of view, the actor/actress comes first. Her respiratory tract is swollen thus making it hard for her to breathe without an oxygen mask. If her condition continues on this way, her agency will be forced to re-discuss a healthier schedule for Song with her various shooting companies.