dude, you ever had to breath hard? thats because your body needs more oxygen. for some, breathing is easier than others. my dog can run for 22 miles and keep going! Looking at the fact this expert needed to do this, the fact you think it stops a nano sized virus, the fact the mask moves when you breathe, conclude obviously, a mask restricts air flow. now, start this paragraph over. why do you breath hard? you need more oxygen. your not getting enough. this is the counterpoint to a marathon runner tell us ALL, we can wear a mask anywhere, all the time.
you breath hard to get more oxygen into your lungs, but he's level never went down. so a mask didnt affect the level of oxygen in his blood. the 22 miles may have done it.
I used to run when I was younger, I developed this breathing rhythm that at the end of a run of 10 miles, I was never out of breath. tired yes, but not out of breath. got me into a lot of trouble, because when I joined the marines, in boot camp, I was never breathing hard. I remember this di, he used to try to get me to breath hard playing in the sand.
a mask well I hate wearing one to be honest, I wish I didnt have to. but it doesnt stop me from breathing, my wife has really bad lungs and it doesnt stop her from breathing. get's annoying specially in the heat. but at the most we spend inside a store is about 30 or less minutes. second we walk out, we take it off if there's nobody around. on average, I say I probably wear a mask may 4 or 5 hours if that a week.
then again when I used to work I had to wear a mask, glasses, gloves, and a heavy heat jacket on top of my damn really hot uniform. all while cutting steel slabs. now that was the time, when I finished I would get the mask and glasses and throw them as far as I could at the end of the shift.
semp