I just read an interesting article about the damage people do when they job or bike in polluted streets/traffic areas.
When you walk you breathe thru your nose. And that’s a good thing especially when you’re walking in streets with traffic that spew the black diesel stuff. In your nose you have the Celia hairs (microscopic) that filters out toxins that you inhale when you breathe.
Now when you run or bike and you’re exerting yourself, you breathe in 15 times more oxygen than when you’re walking. And people tend to breathe thru they’re mouth as well when exercising because it’s easier to get more air that way. so you get 15 more toxic stuff to your lungs, and it goes right to the lungs, without getting filtered (whatever could get filtered) by the nose.
There was studies about this that clearly showed that ppl who biked in traffic had been inhaling way too much stuff and how it affected than.
So better walk to the park and start your biking there.
And it’s ironic that those people that do the right thing to reduce pollution (i.e. biking commuters) are the ones who get to inhale the toxins they’re trying to reduce.