Well! Thanks god that i'm gonna play it on PC! I'l just immediately turn off the automatic health regeneration! Morrowind had no Magicka/HP Regen unless sleeping, Oblivion had just Magicka regen and now Skyrim has both HP and magicka regen. Bethesda surely are making this game way to easy. I hope they release the construction kit with the game so i can remove the regeneration script before start playing!
Well in Daggerfall Fatigue does not recover on its own, and when you run out of fatigue you pass out (and usually get eaten) there was also special Medical skill thats
helps you heal faster so that it takes less time to rest and recover your health, magicka, and fatigue. Because all quests have time limits, it can be a bad thing if you spend too much time resting; a high skill here can cut your naptimes shorter and let you get on with the adventuring.
I don't think HP and magicka regen depend on script more like there is couple of variable for this.