According to an article from Live Science, an Indian mystic claims he has had nothing to eat or drink since 1940, taking his sustenance from air and from meditation. He is being studied. Not only is this outrageous, it would seem impossible. I hope there is a follow-up on this story. The human body must have food and water to survive. If the body could survive without food, the Donner Crossing would not have turned into such a tragedy, and people would not regularly perish from anorexia. Breatharians feel that choosing not to eat is only part of a lifestyle designed to expand the sphere of consciousness.
As for me, I am unable to believe such a thing is possible.