Humming Can Help Ease Nasal Problems – Keeping the sinuses healthy and infection-free requires ventilation and keeping air flowing smoothly between the sinus and nasal cavities. And what better way to keep air moving through the sinuses and nasal cavity than by humming a tune?
The Claim: Humming Can Ease Sinus Problems, Anahad O’Connor, The New York Times
https://www.nytimes.com/2010/12/21/health/21really.html
Humming Greatly Increases Nasal Nitric Oxide, Eddie Weitzberg , and Jon O. N. Lundberg, American Journal of Respiratory and Critical Care Medicine
https://www.atsjournals.org/doi/full/10.1164/rccm.200202-138BC