Hehe. The linguist has identified a distinction. Whatever works for you: maybe some stimulation, maybe some relaxation. :)

We calm it and maybe it isn't active. We stimulate it and then it's relaxing us. I see what you're saying.

Is there another side to it? Isn't calm and soothed a form of stimulation? An active, easy coherence?

Maybe we don't want to be over-stimulated. Stimulated in the right way creates coherence, in the wrong way, chaos. We can be calm--and active. Or we can be stimulated--and uneasy.

You don't have to worry that it won't be stimulated in the right way when it's calmed and soothed: it will be. And that's what you want.

So, I don't think you can go wrong with a calm and soothed parasympathetic nervous system. That's the way to go. For me, soothes and calms is coherence. And that's good for your body, and good for you, it's what you'll feel when you do yoga.