There's a simple economic explanation for why poor people might do less jogging. Jogging is a luxury activity: it takes time and energy, without producing any income; it doesn't get you a job or take care of the kids. If you are struggling just to get by, it wouldn't necessarily be a wise expenditure of energy.
Poor people also tend to live in dangerous neighborhoods, which can make jogging a bad idea.
Poor people also tend to live in dangerous neighborhoods, which can make jogging a bad idea.