Exercise:  Back in the day it was less likely to afford to buy a car, so many people used busses or walked as there own transportation.  Which included physical use and was exercise for them.  As for now most of our parents have cars or we have friends who have cars which who gives us rides to anywhere we need to go.  Many people now in the 21st century are “lazy” because we know we have other options other then to walk to our destination.  Not everyone has the same luck now a days there still are people who walk and ride busses around town but those are the ones who absolutely have no one that can help them get around or they rather save many.  In the past there was no such thing as “saving money” they either had money or none at all, but since the “thing” back then was to walk to where they needed to be.