Looking back, I think that's what went on with my father a couple of times. He told me that "yesterday I walked from here to the dresser and back two times." He said it made him very tired, and he got dizzy and had to hold on to the walker. He hadn't walked in over a year, and I just thought it was a dream. Another time, close to that time, he asked who's idea it was to not let him have a drink. He said we were all standing there, and he wanted to know who's idea it was to deprive him of water. They must have been hallucinations. I thought he was just dreaming these things. His breathing was very, very shallow the last month or so of his life.