When we do zazen, we may imagine that we are sitting quietly. But our weight is dropping down into the earth.
We are pushing the earth with all our strength. And the earth is pushing back. We can feel this push up our spine, up through the top of our head. There is the appearance of stillness because there is balance; if there were not, we would fall down, into the earth, or fall up, into the sky.
Ourselves, the earth and all things are just facets of full dynamic functioning.