Stewie, I used to work 12hr night shifts (well, only 2 at a time in a 4-on-4-off shift pattern - 2 x 12hr days + 2 x 12hr nights). Used to work until 6am, by time I got home, it was str8 to bed, so about 6:30 - 7am, and didn't get up until about 2pm though, so I usually got plenty enough sleep