In this video from MSN there is a small part about how food timing can change the circadian rythm.
The part in questions features Patrick Fuller from Harvard, and the pubmed paper in question is this one.
I dont access to the full paper but the abstract gives us the clue as to what its all about,
"When food is plentiful, circadian rhythms of animals are powerfully entrained by the light-dark cycle. However, if animals have access to food only during their normal sleep cycle, they will shift most of their circadian rhythms to match the food availability."
Well anyway, does it work?
It does make sense in theory, if your a predator and theres only certain times of day you would be able to catch your prey, it would work against you if your body clock was such that it was telling you to sleep during those hours.
From what I could gather, first you need to be in starvation mode, which is you need to have fasted for atleast 16 hours first.
Then, during the time you would normally be asleep, have a meal.
I will have to experiment to see if this actually works at all, and to figure out the exact timing, the timing to shift our body clocks forward.