My body didn’t come with an instruction guide

My body is broken.
Or at least I can’t hear it anymore.
I’ve heard that a lot of people have broken their thirst mechanism. Their body may crave water, but they don’t feel thirsty. i.e. They can’t hear their body anymore. I’ve got a similar problem.
Yesterday, when I should have been handling some of the chores that are needed around here, I started reading a book. A very good book. Nearly nine hours of good book. I stayed up too late. And after six hours of sleep, I work up early. So I went back to reading.
Needless to say, I wasn’t my most productive today. I blamed it on lack of sleep.
That wasn’t it. It was lack of food.
I had gone for a 26km run that morning and had had only two small meals for the rest of the day. I didn’t feel that hungry. And because I’m not a big fan of eating, I didn’t go looking for food. I grabbed a small chicken pot pie and ate that for one meal, completely missing the pile of pasta leftovers I had in the fridge. Today when I was cranky and headachy, I thought I needed sleep. All of that went away when I finally had made a nice ravioli bake for myself.
When I was doing my reading, it was all in bed. That may have been restful enough for me.