The fast and the curious - how do anorexics do it?

I have been ill - really quiet ill. I'm going to have to fast for 48 hours, I'm 16 hours in and I'm really hungry. How do anorexics do it?

I managed 28 hours the first time, thought I'd got away with it. Nope, half assed doesn't work with food poisoning.

How do the do it? It is just down right unpleasant...

tx