[Graybeard58]

Normal O2 levels are between 95-99%; so wearing a mask lowers it 6%; two masks 12%. You’re in COPD area with two masks.

>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

And if you already have COPD, one mask is unbearable.

[SkyDancer]

Another post has it that masks don’t lower your O2 levels so who’s right? I say it does. Then too, the humidity buildup behind the mask is awful, really affects the sinus’

[upchuck]

And if you already have COPD, one mask is unbearable.

I know whereof you speak :)

No mask for me. EVER.