Diana Gabaldon said this quote

For several days, I slept. Whether this was a necessary part of physical recovery, or a stubborn retreat from waking reality, I do not know, but I woke only reluctantly to take a little food, falling at once back into a stupor of oblivion, as though the small, warm weight of broth in my stomach were an anchor that pulled me after it, down through the murky fathoms of sleep.