There is no doubt that this occurs from time to time, some people fall asleep very easily and others don't. Personally I simply cannot nod off unless lying flat and basically in bed, believe me I have tried. However I have flown with (and know outside flying) some people who can fall asleep with incredible ease and are gone in a few seconds without even knowing it and seem powerless to stop it. Put two people like that together and the chances that both will be asleep at some point on a long night flight are pretty high I should think.
Last edited by Max Angle; 5th Nov 2007 at 16:39.