Bush's relentlessly upbeat demeanor, which he flaunts at press conferences and other public events, infuriates his political opponents and much of the mainstream media. They want him to act like the broken man they think he should be. Sorry, but he's a healthy man, mentally and physically. He's bolstered by his religious faith, his sense of mission, his scorn for elite opinion, and what an aide calls "his really good physical shape." Exercise and sleep help to "keep his spirits high," the aide says.