Can it be put as, a list of ways to counter the signals that your body is trying to tell you to stop? I think survival would mean that you aren't killing yourself. While reading this, I kept asking myself if a medical doctor would agree with you. I think that it would take quite a bit of effort to find one that does.
I am not a medical doctor, nor do I make any claims to be. I have simply found a few things that work in a specific case and am sharing them in hopes that others in similar situations might benefit.
Maybe some of us aren't cut out for it? There are definitely weeks when I spend almost 80 hours at my home office computer. My family doesn't really like these periods, but I rarely get headaches and have never experienced joint pain. (I'm almost 40)
I really hate to walk away when I'm on a roll, my mind is really in the moment and has a list of to-dos that is 100 items long. If they are floating around in my head, it does interfere with sleep. I keep graph-paper notebooks with sewn bindings, which have a bit of permanence, and pick up a pen and get them out of my mind so I can close the day.