Sure, but that's still a distinct thing. When burned out you physically can't put yourself into performing the job (and often other things in your life too) reg

Sure, but that's still a distinct thing. When burned out you physically can't put yourself into performing the job (and often other things in your life too) regardless of your motivation or desire. Being demotivated may but does not necessarily lead into that state; it's not necessary for it to occur either.