**Links to**: [[Action]], [[Agent]], [[Xpectator]], [[Secretion]], [[Motion]], [[Cortisol]], [[Principle]], [[Sundowning]], [[Principle of Sufficient Cortisol]], [[Neuroendocrinology]], [[Active inference]], [[08 Active ignorance]], [[Personalized medicine]], [[Movement]], [[Conceptual movement]], [[Free energy principle]], [[Organism]]. ### [[Postulate]]: In organisms: motion is secretion, as it is secretion which leads to motion. The two cannot be disentangled. Considering the order of appearance of organic processes on Earth: secretion came first. Asking the question “what, exactly, is action?” (in the context of [[Active inference]]), necessitates that we frame what an agent (that which _acts_) can do. Organic beings such as ourselves, according to Karl Friston, have two options available in order to actively infer (i.e., to act): motion or secretion. But, motion depends on secretion—ATP is only released under specific chemical circumstances, which depend on the secretion of hormones—so the postulate/argument is that all there is, is secretion. We explore this in the conclusion of [[07 Phenomenology of Sick Spirit]].