3
votes
1answer
26 views

Why are particulate matter toxic to humans?

There are many studies on fine particles (PM2.5) and their fully negative effect on human health. There doesn't seem to have any positive aspect of inhaling particles, except very particular ones, but ...
-1
votes
1answer
68 views

Breathing under water

Why can fish breathe under water but land mammals can't? How can fish extract oxygen straight from water but humans can't?
1
vote
0answers
153 views

In-Ear headphones increasing nasal breathing resistance

I figure this is a rather strange question, however, I noticed this quite some time ago and wanted to make sure that this is in fact a permanent condition before posting. The situation is as follows: ...
0
votes
0answers
14 views

Respiratory protections against various pollutants

Obviously it's better than nothing, I live in a city, less polluted than the leaders like Hanoï, Shangai, etc.., but strangely, I already expressed it on this site, I have a sort of disproportionate ...
0
votes
3answers
317 views

Why do we exhale after we hold our breath?

I tested this out with my friends, and I find that after they hold their breath and can't hold it anymore, they exhale air, instead of inhaling air. Interestingly, they all try to inhale in as much ...
5
votes
3answers
140 views

Do dogs have something different about their physiology that allows them to pant without hyperventilating?

I was wondering this as I considered how effective panting would be for humans as a means of cooling.