Going to sleep hungry to induce LDs
I've just considered something. Would going to sleep a bit hungry increase the chances of having a LD?
The reason I suspect it might, is because while hungry our minds are less comfortable and more in what I call 'survival mode'. While all our basic needs are overly-satisfied (we're warm, safe, full, and otherwise content) we don't have to focus on survival and consequently are more aware of everything.
This is an exaggeration, but to get what I'm trying to say if it isn't clear already, consider the difference between a fat and content house-cat and an ally-cat or wild cat. The wild cat that has to fight for its survival is more aware of its surroundings, is more shifty-eyed and quick to flinch.
This is, I believe, the reason why we're more likely to have a LD after undergoing a drastic life change like going on a trip. We know that we've abandoned our regular comfortable environment where our safety is assured, and we subconsciously become more aware of everything.
It seems likely to me that, like change, hunger makes us more alert, and therefore more likely to have a LD.
Everything I'm claiming in this post I've concluded is likely based is on personal experience. If your experience differs, or you have any reason to disagree, please discuss it.