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This video goes over the advantages of nasal breathing as compared to mouth breathing. Ranging from performance enhancement to immune support, breathing through the nose offers a wide range of benefits.
Sources:
https://oxygenadvantage.com/science/nose-breathing-vs-mouth-breathing/
https://medium.com/runners-life/research-confirms-the-secret-ingredient-to-athletic-performance-9db76bc70814
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7944632/ https://www.sciencedirect.com/science/article/pii/S0020653922002210 https://www.sciencedirect.com/science/article/pii/S1808869415301014 https://link.springer.com/chapter/10.1007/978-3-031-12386-3_39 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7185155/ https://bmcoralhealth.biomedcentral.com/articles/10.1186/s12903-021-01458-7 https://www.sciencedirect.com/science/article/pii/S1808869415301014