Our airplanes seldom sit for more than two or three hours at a time. They're going around the clock, otherwise. One crew gets off, another gets on and goes...the airplanes don't rest until they come back home for an inspection of maintenance cycle.
We get off the airplane, get our required rest, and get on the next airplane that comes through...and operate to the next destination where we get off, get our required rest, and get on the next airplane. From time to time, we spend several days sitting. Often by the time we have spent two-three days, the same airplane we got off is passing through again...having already gone around the world at least once or more, and we go again.