President Bush has purposely lost eight pounds since his last medical checkup, in December, and his doctors said after his annual physical examination yesterday that he was in "excellent health." Mr. Bush, 59, remains in the "superior" fitness category for a man his age, the doctors said. They also said Mr. Bush, who exercises six times a week, was "fit for duty" and expected to remain so for the rest of his term. No significant new health problem was detected, and findings from the physical examination and the standard laboratory tests were within the normal range, according to a statement...