David BrimacombePost-concussion syndrome (PCS) recovery coach

Why Humming Helps PCS #PCSRecovery #VagusNerve #PostConcussionSyndrome #NervousSystem

6 Jan 2026 · 1 min

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In this brief monologue, David Brimacombe explains that humming—and other vocal vibrations such as singing, gargling, or chanting—stimulates the vagus nerve. The vagus nerve is the primary conduit for moving the autonomic nervous system from a sympathetic (stress‑oriented) state toward a parasympathetic (rest‑and‑digest) state. By activating this nerve, humming can help “draw down” the heightened symptoms associated with post‑concussion syndrome, offering a simple, low‑tech tool for nervous‑system regulation.

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humming has a great power to help draw down my symptoms. Now I started to think, why is that? Why humming? Now there's something to do that when you make a vibration noise like singing, gargling, chanting, or in this case humming, it actually activates your vagus nerve. Now your vagus nerve is your one nerve that helps draw down your autonomic nervous system to get you out of that sympathetic, that stress state, and downregulate you into the parasympathetic state.