A dynamic process involves changes, even if they are designed to lead to a steady state. Negative feedback attempts to keep a steady state by stimulating the end of whatever produces it--hunger leads to eating which ends hunger. Antagonistic effectors can lead to changes from one end (lots of a thing such as heat) or another (little of a thing) to keep that thing in a steady state between selected values.
Work Step by Step
Dynamism implies constant change or movement, and there is no reason why this cannot produce a steady state. For example, if you were standing on the deck of a ship as it rolled on the sea, you would have to constantly move right or left to maintain a steady, upright position.