Moses also spent 40 days without food or water. These are the miracles of God done through His power and will. Breatharians, from what I've read try to wean themselves off food and water and extract all their nourishment from air and sunlight. This tells me it is an act of self-will if it can truly be done at all. I know there are some who claim not to have eaten or drunk anything in years, but I can't help but be doubtful of their claims, it goes against human design. I simply can't accept that human kind was originally designed to not need food as some say. While we might change in average stature or longevity, I don't think the basic human model has been altered that much from creation.