I am a physician but I routinely sleep less than six hours per night and I rarely eat my meals on time if at all. I often rise early in the morning to respond quickly to health stories and do my research. But compared to the reporters I often work with, who jet around the country without knowing where or if they will sleep and have drinks instead of dinner, I am the picture of a healthy lifestyle. What about you?

Marc Siegel is an internist and associate professor of medicine at the New York University School of Medicine. He also writes the Unreal World column for the Los Angeles Times health section and is a Fox News medical contributor.