Kennedy Urges Physical Fitness Addressing the Football Hall of Fame dinner, the President touches on his career in the armed forces under General Macarthur and the general gets a laugh. He then urges Americans to become participants, exercise and not merely spectators, in sports. Macarthur smoking. Kennedy at podium speaking at dinner. JFK clears throat during speech. The President urges, "In short, what we must do, is literally change the physical habits of millions of Americans, and that is far more difficult than changing their tastes, their fashions or even their politics." Kennedy steps away from podium and those around him stand and applaud.