i have never been on nights personally but i was wondering this how long are you shifts, are they just like days ones (8hours) but at night time? if they are think about this, on a day shift most people start at 9, and get up at about 7, they come home between 5-6, and DO NOT got to bed, they maybe go to the shops and watch TV, make some Tea and go to bed at about 11, adding up to a 16hour day, the impression i am getting is that you guys are coming in from your shift, still full of adrenelin from the nights work and trying to go to bed. try to act as though the night is day, go to a 24hour supermarket and do you shopping, make sure all your soaps are recoreded on sky plus and watch the ones you missed with either sleeping or working, and just act like a normal day, and if all that fails you could try to set your watch wrong, so you think its a normal day but its not really.