Joe Biden Turns 78 and Is Set to Become the Oldest US President.<br />President-elect Biden <br />turned 78 years old <br />on Friday, Nov. 20.<br />When he is sworn in two months from now, Biden will replace Ronald Reagan as the nation's oldest president.<br />Reagan was 77 years and 349 days old when he left office in 1989.<br />Biden's physical and mental health have <br />been a concern for some people.<br />but in a September interview with CNN, he promised to be "totally transparent" about any health issues if elected president.<br />His physician, <br />Dr. Kevin O'Connor, <br />described Biden as...<br />“... healthy, vigorous ... fit to <br />successfully execute the duties <br />of the Presidency, to include those <br />as Chief Executive, Head of State <br />and Commander in Chief.” .<br />Biden reportedly works out five days a week, utilizing a Peloton bike, treadmill and weights
