The chief condition on which life health and vigor depend on is action. It is by action that an organism develops its faculties increases its energy and attains the fulfillment of its destiny.
I'm 58 years old and I just went through 8 back surgeries. They started cutting on me in February 2009 and I was basically bed ridden for almost two years. I got a real dose of reality that if you don't have your health you don't have anything.