Quote: DHM "Get an Aisle seat - far less claustrophobic and there are sometimes clips under the seat arm that allow you to lift the arm up on the aisle side - loads more room.'"
I always opt for a window seat in economy, for the simple fact you get something to look at occasionally and more importantly you can rest your head against the cabin interior (I always take a jacket as a cushion). Far easier and comfier than that awkward moment when you nod off, your head drops sharply and you crick your neck. Did myself some neck damage on a Heathrow-Manchester flight last month falling asleep like that on the looooooong taxi out at Heathrow.
Quote: DHM "Don't drink any alcohol at all.'"
Getting bladdered is a stupid idea, agreed, but I find a glass of wine or two or three before departure helps, and it shouldn't make you desperate to wee. As I said earlier, in business class the crew tend to plough you with booze to get you off to sleep anyway. Works for me.