Canterbury Tales (8)
Soun is noght but eyr ybroken,
And every speche that ys spoken,
Lowd or pryvee, foul or fair,
In his substaunce ys but air.
(Geoffrey Chaucer)
You need to find a space where you will not be disturbed. Stand in the balanced position. Close your eyes. Start to tune in to your body – feel your heartbeat, the weight of your hands, the rhythm of your breathing. Feel your feet in contact with the earth. Relax your jaws and let your body groan through your mouth. Feel the sound rising up through you from your feet. Groan as loudly and as long as your body wants to. Just let go and allow the sound to come out.

Lovely. I will give it a try.
After you you’ve experienced this sonic act yourself, you might want to describe its effects. People here had interesting observations.