"Physical fitness is not only one of the most important keys to a healthy body, it is the basic of dynamic and creative intellectual activity. The relationship between the soundness of the body and the activities of the mind is subtle and complex. Much is not yet understood. But we do know what the Greeks knew: that intelligence and skill can only function at the peak of their capacity when the body is healthy and strong."
                                                                                                     -John F. Kennedy
Reflection: I do not know what this long quote means. Mainly because it's so long and utter confusing. But from what I understand is that order to reach your highest limit of smartness is for you to be strong and healthy. In order for you to be smart is that you must have a body that can work with it's mind. Not being healthy nor strong can effect or affect your mind. 
Example: From my understanding of this quote is that without having a healthy and strong body your mind will not focus. So for example, let's say you do drugs and get into tons of random and useless fights. Your body will get injured and hurt. By being hurt your mind will tend to focus more on the pain. Instead of thinking regular thoughts your mind focuses on the pain. So therefore having a strong and healthy body can help you think faster and help you think smarter without a problem. Well that's from my understanding of this quote.

I don't know.