[T]he nose... produces... nitric oxide... a that plays an essential role in oxygen delivery and also helps battle... viruses, bacteria and other path… - James Nestor

[T]he more you focus in on these clicks, the tinier... they get, [growing] into more complex structures. ...[O]ther ns such as dolphins and orcas also use these. It's this secret language... discrete codes... down to the millisecond.

Human blood has a chemical composition startingly similar to seawater.

We know that the more you breath through your nose, the more that it's going to open... [P]eople who are habitual mouth breathers, who are also joggers... start breathing through the nose. In the beginning it's really... hard... then weeks... months go by and their noses open up... [T]he benefits... they're innumerable... not only oxygen, but it helps defend your body, humidifies... conditions air [etc.]