Physical Fitness 

"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"
- John F. Kennedy

what I think this means is that many people think that being physically fit is everything like that's all they need but it really isn't because if you're physically fit and not mentally fit then thats, not a good combination. If your healthy and strong you pretty much have every skill of life. Being healthy, creative, and smart can help you so much in life because those 3 skills are the ones you will need the most in life you may not have it now and as the years pass by your going to get better at all that.