I'm with you, fireman. Our int'l guys typically fly two six-day trips, and it seems like they need a couple of days to recover from each. Of course, this is trans-Atlantic, which I'd guess is less taxing than trans-Pacific flying. On the domestic side, we fly a few more days, but it's a little easier on the body. The pay is the same for domestic and international.
That 777 must have been nice to fly.