Your body is, maybe, but we're not all the same. Making my body sit still and do nothing requires sustained, focused attention; action is the comfort state, and idleness the burden.
And I'm just tired...all the time. I do nothing and still I'm exhausted.
Unfortunately I have no advice for it but I wish you good luck. We're all struggling lately
So many other things are possible like iron, thyroid, sleep apnea, ADHD, depression or burnout, long COVID, tropical illness. Maybe more.
Finally it is totally morally OK not to be a 100% productive worker bee. A "cure" is not necessary but might be worth rabbit holing if you desire and have the energy.
You have authority over your body. You can tell it to do things it doesn't want to.
You can walk into your bathroom and take a cold shower right now, on purpose. Your body doesn't want to, but it will yield if your mind tells it to.
In fact, doing that will switch up your state into a different one, which is half of the work needed to feel better.
This isn't the answer for everyone, but for 90% of people, it moves the needle in the right direction.