Nasal breathing is incredibly effective in enhancing endurance during physical exertion. When our bodies reach their limits during exercise, it is oftentimes due to the lungs’ inability to fulfill the oxygen demands. Nasal breathing is associated with higher oxygen uptake (VO2 max), crucial for endurance. It improves oxygen uptake and utilization during physical exertion. Intermittent hypoxic training can enhance aerobic capacity and endurance performance through specific breathing practices like nasal breathing.

‍https://hypoxico.com/wp-content/uploads/2017/10/intermittent-hypoxic-training-on-aerobic-capacity-and-endurance-performance-in-cyclists.pdfhttps://uwe-repository.worktribe.com/output/1436477

Nasal breathing is essential for cardiovascular health due to its role in Nitric Oxide production, a gas that widens blood vessels. Breathing through the nostrils releases nitric oxide, which helps open blood vessels. Breathing exercises that involve slow and controlled nasal breathing may be beneficial to the cardiovascular system by affecting autonomic variables such as blood pressure and heart rate.

‍https://onlinelibrary.wiley.com/doi/abs/10.1046/j.1365-201X.1996.557321000.x
‍https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5382821/

Nasal breathing and proper breathing techniques deliver oxygen and carbon dioxide to the body's cells and tissues. Increased oxygen flow throughout the body enhances recovery, performance, and much more.

https://hubermanlab.com/how-to-breathe-correctly-for-optimal-health-mood-learning-and-performance/

Breathing patterns can positively alter one’s state of being through different physiological pathways. Studies have shown that high-frequency nasal breathing can enhance attention and alertness by activating the sympathetic nervous system and reducing vagal activity. This implies that nasal breathing can catalyze in improving one’s energy levels and focus.‍

Nasal breathing can positively impact heart rate variability (HRV), which refers to the variation in time between heartbeats. A higher HRV is linked to better health and performance in many areas. Practicing slow nasal breathing, such as taking six breaths per minute, has been shown to improve HRV. This improvement can lead to a range of benefits, including enhanced sports performance and relief from symptoms of asthma and irritable bowel syndrome (IBS).

https://pubmed.ncbi.nlm.nih.gov/23029969/
‍https://pubmed.ncbi.nlm.nih.gov/29771730/

The potential role of RestQuicken Mouth Tape in enhancing REM sleep quality. REM sleep is a vital phase of our sleep cycle associated with memory consolidation and mood regulation, our brain's version of therapy, metaphorically speaking. By improving the quality of REM sleep, RestQuicken Mouth Tape may contribute to overall cognitive function and emotional well-being.

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9498537/

Mouth breathing tends to start in childhood and leads to improper jaw development.A mouth-breathing face is characterized by its poor posture balance, such as an elongated jaw and drooping of the eyelids.Nasal breathing has demonstrated the ability to restore facial aesthetics, resulting in the sharpening of the jaw, and improved alignment of the teeth and jaw structure.

Sandra Kahn, Paul R. Ehrlich(2018) Jaws: The Story of a Hidden Epidemic

https://www.mewing.app/blog/mouth-breathing-vs-nose-breathing