Grandparents are very important people.
According to anthropologists, about 30,000 years ago the human life span was about twenty years. At that time, people started living longer - thirty years and beyond. And what caused the dramatic shift in longevity? Suddenly there were more grandparents around. Parents were able to help their sons and daughters, and to pass on what they had learned to subsequent generations. This wisdom, in turn, helped children and grandchildren survive to an older age.
If you have grandparents, hang around them. Get them to tell you their stories - to pass along their wisdom to you. Who knows, you may live longer because of it.