We have always known that exercise was good for the human body. Numerous benefits have been studies, such as lipid profiles, blood pressure changes, on top of the obvious change in the way we look.
Recent studies show that exercise goes deeper then body and blood.
Exercise has now been linked to changes in DNA as well as brain function.
Its never to late to start ( please consult with your physician before starting an exercise program)
Check it out:
How just a little exercise changes your DNA and why that is a very good thing
Exercise reorganizes the brain to be more resilient to stress: Princeton study