I live in northern China were the air quality is atrocious. A few days ago I read that the more frequent, deeper breaths taken while running greatly amplify the negative effects of air pollution (something like 1 hour of running is equivalent to a full days worth of normal exposure). I'm considering buying an air filtration mask that I can wear while running. Has anyone tried this? Any problems I might need to worry about if I wear a mask for all my runs? (aside from the problem of looking kinda stupid.)
Thanks