Brad Johnson's definition of good sleep differs from that of most. Five hours leaves him light and energized. Even after a 24-hour trip to Europe, the 70-year-old man in Providence, Utah, can sleep six hours for a few nights - but never the seven hours or more recommended for adults, writes National Geographic.
Brad Johnson's definition of good sleep differs from that of most. Five hours leaves him light and energized. Even after a 24-hour trip to Europe, the 70-year-old man in Providence, Utah, can sleep six hours for a few nights - but never the seven hours or more recommended for adults, writes National Geographic.