There's a crazy for the paleolithic diet. Periods of fasting, and periods of gorging, mostly on meant.
But does it really work. Do we really need to return to our primitive ways in order to live longer? Or have our bodies adapted to a different form of diet? I think we're ok with not tracking down deer meat and eating it all in a few sittings.... thta's just me though.
http://www.good.is/post/good-asks-the-experts-is-the-paleolithic-diet-really-better/