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I'd like to see a study exploring the net health effect of exercising outside in a polluted city. Also, if it's polluted outside, isn't it polluted inside too?

I'd like to see a study exploring the net health effect of exercising outside in a polluted city. Also, if it's polluted outside, isn't it polluted inside too? Do these cities all have buildings with air purifiers?

whacked_new 17y ago
Physically I would say yes (air purifiers). Central AC that is. Not sure the efficacy. Also, particulate matter is much more volatile outdoors, because it's outdoors. And, the downmods, two in a row, make zero sense. Else, explain it please.