"Not Entirely.
How does someone’s age, weight, fitness or underlying health condition affect their ability to wear a mask?
A: Everyone can wear a mask safely, and while it’s not always comfortable, it is important to do so to protect others from the spread of COVID-19. People with underlying respiratory conditions, like severe asthma or COPD, might find it harder to breathe because of the added resistance to flow.
Additionally, people of advanced age or weight do lose lung function and may find it more difficult to breathe with a mask on, but for most, it will not impair oxygenation (oxygen getting into the blood) or ventilation (blowing of carbon dioxide). Health care professionals have worn masks for decades, often uninterrupted for hours, in operating rooms without adverse effects. If you are unsure about your oxygen capacity speak to your health care provider.
https://www.uvmhealth.org/coronavirus/staying-healthy/mask-myths
Now, there are those who may experience anxiety or claustrophobia when wearing a mask, the same way some panic when getting into an elevator or CT scanner. This can be hard to combat, especially when you’re in the middle of it. But there are a few things you can do to try to calm yourself: long, slow breaths may steady you, as will the knowledge that despite how you’re feeling, your lungs are getting exactly what they need.
https://wexnermedical.osu.edu/blog/masks-oxygen-levels
The N95 mask forms a seal and filters 95 percent of particles. If worn for many hours without a break, an N95 mask might potentially affect oxygen levels but likely not to a dangerous extent, especially in people who are healthy.
https://digitalmedic.stanford.edu/myth/myth-face-masks-can-reduce-oxygen-getting-to-the-lungs-and-bloodstream/
You sidestepped the issue. Its an OSHA requirement not to wear a mask during low physical activity. As in a government regulation.
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