"I do it for my health, because it's sociable, and because I enjoy the freedom it gives you." Pam Jones, Age 79
When I read this quote, what stood out to me was the word freedom. To be 80 years old or almost 80 years old and to still have control over daily life decisions is successful aging. Further, to have an activity that after 8 decades of life still provides a sense of freedom can only make life more enjoyable.
Thus, whether it is taking a bike ride, going for a brisk walk or going to the local health club the benefits of regular, moderate exercise continue to be positive. Your personal life and the lives close to you will also improve.
If not already doing so, check with your doctor and give exercise a try.