Don’t know if it’s the same but ever since I was little, my lower legs would get extremely tired. They “didn’t want to get out of bed”, like they decided “I’m not going to work for you today. I would if I could but as you can see, I can’t.”
Yet when my energy levels got up to a certain point – usually when my mind was in a good place and I saw only positive things, my legs would bounce out of bed on their own and be ready to start the day fresh.
So I don’t know if it’s the same thing but I still am that way.