Interesting. Guessing this has to do with humming (or generally, vibration) increasing endogenous nitric oxide production ~15x [0]. Nitric oxide is a vasodilato

Interesting. Guessing this has to do with humming (or generally, vibration) increasing endogenous nitric oxide production ~15x [0]. Nitric oxide is a vasodilator, which could mitigate sleep apnea caused by a deviated septum. 0: https://pubmed.ncbi.nlm.nih.gov/12119224/ https://pubmed.ncbi.nlm.nih.gov/12119224/