Potential GOP presidential candidates just can’t seem to stay in good health these days. Michele Bachmann was in the headlines this week for her incapacitating, recurring migraines, and now Chris Christie is in the hospital after having difficulty breathing. According to doctors at Somerset Medical Center, the New Jersey governor’s blood tests, EKG and chest x-ray came back normal. The official diagnosis: an asthma attack. Christie has spoken openly about his struggle with obesity, and his history of asthma. But his persistent health issues only serve to re-emphasize concern amongst critics, who wonder if he is fit enough to take on the country’s highest office.