Nasal breathing refers to the process of inhaling and exhaling air through the nose. This method of breathing helps filter, warm, and humidify the air before it reaches the lungs. The nasal passages contain tiny hairs and mucus that trap dust, allergens, and other particles, promoting cleaner air intake. Additionally, nasal breathing encourages proper oxygen exchange and can enhance overall lung function. It activates the diaphragm more effectively than mouth breathing, which can lead to better oxygenation of the body. This practice is often recommended for activities like yoga and meditation to promote relaxation and focus.