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Saying it's unhealthy is pushing it a bit.

But breathing through your nose means that the air has to go through a longer path before reaching the lungs. And the nose cavity in particular acts as a filter and a preprocessor, catching dust, balancing the temperature and the moisture content of the air before it reaches the lungs.

It might be a tiny bit healthier, particularly in a dusty environment. But no need to worry if you forget it for awhile.

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13y ago

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