i don't know
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But, for sure, masks make me almost immediately antsy and then progress into light-headedness and nausea to ripping the sucker off my face and loudly practicing Wim Hof breathing to get oxygen back into my brain.
I can only make it long enough to buy groceries by constantly pulling it away from my face when no one is near, dropping it below my nose while needing to use my glasses to read labels, and, still, sometimes I almost don't make it out of the store without feeling as though I'm about to pass out.
AND that's only when the places that don't require masks don't have what I need.
I think only young adults can really pull off wearing them for protracted periods because they still have enough brain cells left to kill before it does this to them, too.
pipe up any time....