“Physical fitness is not only one of the most important keys to a healthy body, it is the basis of dynamic and creative intellectual activity. Intelligence and skill can only function at the peak of their capacity when the body is healthy and strong”

                                                        -President John F. Kennedy

President john f kennedy is saying that you can be your best only when you're physically fit. For example if you want to do something or anything you won’t be able to because you’ll be tired. But if you were physically fit then you wouldn’t be tired. So like if you wanted to achieve something you would have to be fit to do that.