In this clip, you’ll hear what John learned from Louis Ignarro, who had a key role in the discovery of nitric oxide. When you breathe in through your nasal passage, nitric oxide is formed, keeping viruses at bay. 

Nasal breathing will mean the difference between life or death for some people with the novel coronavirus. Nitric oxide opens up airways so you can breathe easier; it opens up arteries so blood gets pumped easier, and in turn you get greater oxygenation of the blood. Press play to learn all about it in this week’s mini-sode!