How does nitric oxide play into this? This is a miraculous molecule that helps kill bacteria, helps kill viruses, is a vasodilator, so it opens up blood vessels. The way that erectile dysfunction drugs work, how do they work? They work by allowing your body to release more nitric oxide. So we get six times more nitric oxide breathing in and out of our noses.

When I mentioned that thing about humming, when you hum, you get 15-fold increase of nitric oxide, which is why people who have chronic rhinitis, sinusitis, you feel a cold coming on, start humming immediately.