> Lol! Who is making the claim? You are making the claim that masks hinder respiration. This has not been supported by evidence, theoretical or outcome based.

> Lol! Who is making the claim? You are making the claim that masks hinder respiration. This has not been supported by evidence, theoretical or outcome based. What is your hypothesis for the mechanism? We know that gases diffuse through the material. > No one will publish the study... The fact that a single study is problematic - without specifying why it's problematic, and without any mention of the many other studies - is not a very strong discussion point. I appreciate the time you put in, but I think we're so far apart that I don't see any reason to continue this thread.