It's interesting to see that. My first hypothesis was probably wrong, but in the interests of open discussion, I thought, "Wait, do the poor people up north not

It's interesting to see that. My first hypothesis was probably wrong, but in the interests of open discussion, I thought, "Wait, do the poor people up north not bike or run?" I realized immediately that this was unlikely, just they don't own smartphones to track themselves, or some variant of skewed sampling. If they DON'T bike, that's sad, because biking is a money-printing fountain of youth (http://www.mrmoneymustache.com/2013/06/13/bicycling-the-safest-form-of-transportation/ http://www.mrmoneymustache.com/2013/06/13/bicycling-the-safe...).