Even when being hunted and having to hide, not move, stay quiet requires active strategising which is action albeit mental only.
Even procrastination requires some form of thinking about a problem so as to prioritise it . Putting one’s head in the sand and ignoring a problem is the absolute worst strategy. More than that it is cowardly.
I used to do that more often than I would like to admit. Overcoming inertia I’ve found to be very challenging. Often the road block is in my own head; too hard, too boring, too likely to fail, etc etc. However, there is no joy quiet like taking the first step and none completing the project and ticking it off.