Even within my middling-fat red-state city, you can see very different size distributions traveling to different parts of the city. Downtown? Skews young and re

Even within my middling-fat red-state city, you can see very different size distributions traveling to different parts of the city. Downtown? Skews young and relatively fit. Most 'burbs, and out in our more-diffuse second business district? Average weight of an adult is a solid 50lb higher than downtown, and probably more like 75lb. Poor areas? Everyone seems to be either ruler-thin or very fat, young and old alike, in about equal measure. That one rich people enclave town with its own country club? A glorious place to drive through when the stay-at-home spouses are out for their jogs, let me tell you. You see the same sort of pattern visiting e.g. a coffee shop in that area, so it's not just selection bias of the activity of jogging. Traveling around to various cities, you see this variation city-to-city, too. Some cities are just fitter (and, in some cases, way "hotter" all around—like you gotta re-calibrate your "10" scale, to use a crude but illustrative example, or you won't see anyone under a back-home "8" your whole visit) than my home city. Others are even fatter (largely in the deep South). Though in all cases you have to take into account that you may only be seeing their equivalent of the "hot" part of town and that may be skewing your overall impression.