Why should you breathe thru nose and not thru mouth?

Breathing through the nose has several advantages over mouth breathing. Nose breathing filters, humidifies, and warms the air before it enters the lungs, reducing irritation and enhancing overall respiratory health. Additionally, it activates the diaphragm more effectively, promotes better oxygen exchange, and helps regulate airflow, which can improve overall lung function and endurance. Furthermore, nasal breathing stimulates the production of nitric oxide, which aids in circulation and immune function.