It's sort of a self fulfilling prophecy. If you take a car everywhere and barely move then by the time you hit 65 you will be in pain all the time and won't be

It's sort of a self fulfilling prophecy. If you take a car everywhere and barely move then by the time you hit 65 you will be in pain all the time and won't be self-sufficient. If you are constantly active you will usually have much better health outcomes and mobility later in life. An article about how walking speed predicts life expectancy: http://www.scientificamerican.com/article/walking-speed-survival/ http://www.scientificamerican.com/article/walking-speed-surv...