You change from the inside out. Attitude Is Everything

Optimism and an ability to "roll with the punches" may be the keys to successful ageing, a new study suggest.
"People who think they are aging well are not necessarily the most healthy individuals," Jeste said. "In fact, optimism and effective coping styles were found to be more important to aging successfully than traditional measures of health and wellness. These findings suggest that physical health is not the best indicator of successful aging -- attitude is." - Dr Dilip Jeste, professor of psychiatry and neurosciences at the University of California, San Diego School of Medicine.

As you can see not only physical exercise and diet contributes to your healthy aging. You gotta have a positive attitude too. The best we can do to have a successful ageing is to exercise, increase activity through participation in sport , eat healthy and have a good attitude.