The reason for breathing in through your nose and out through your mouth

Question

The reason for breathing in through your nose and out through your mouth

In: Biology

Answer 1

In addition to a lot of these comments, breathing through the nose stimulates nitrous oxide release within your blood vessels – an endogenous (produced within the body) molecule that causes dilation of your blood vessels. This increases the surface area that oxygen is in contact with in the lungs, allowing for a greater amount to pass through and be circulated for function.