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Do masks harm your oxygen levels? You asked, I tested. Because you can give me MANY reasons to not wear a mask - and some are valid. But I will not allow PSEUDO-SCIENCE to be masqueraded as SCIENCE. Watch the video for the results. And, for those of you who are still concerned that they’re harming your breathing - (1) It IS true that masks increase the resistance to breathing. Most otherwise healthy people can compensate for this. For some people with lung disease or other breathing problems - s
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