Humming quietly to yourself is a self confirming sound.
This is a sidetrack from the central theme of the essay, because it's not a necessity for survival, and only a few animals do anything like this. I believe cats do something similar when they purr, frogs when they croak, and hens and camels can make similar sounds.
The possibility comes naturally with our human body, and our human vocal chords. I find it is ritualised by Buddhist monks when droning their texts. This is far simpler. There is no text!
I find humming quietly to myself a useful way of keeping peace with myself, particularly when everything outside is too noisy, busy and overpowering, like when walking through a crowd of bustling people. And it fits well, because at these times i'm not interested in scenting and my mouth is closed.
Extra Humming Games
We start smelling and we start making noises at birth, when the breathing starts. (This is also a useful idea when building up to whole body awareness, we can taste, see, and listen first.)
First you need to do the tasting and smelling exercises, and feel-taste the top of your mouth, and the smell in your nasal canals above the roof and sides of the mouth. Then feel how the soft palate is the centre of this area – and notice how when you start humming and it vibrates this central area, (and also the top and back of the throat). This stimulates the lower brain. ... and experts in the field of the lower brain could please tell us more on this ...
Sometimes you may feel the humming, vibrating in your belly, i don't know the next step on that route. – You can also focus this humming and vibrating anywhere stiff to relax any stiff parts of the body. Quite generally it seems healthy to allow yourself to make any sort of vocal noise you want, to vibrate and massage yourself inwardly.
Please continue with Backs to the Wind