Slava Isusu Christu!
I'm a voracious carnivore. I love meat, all kinds, be it steak, chicken, pork, venison, and everything in between. I'm also a devout fan of cheese and drink a glass of milk daily, during non-fast periods. But I also eat bread and other carb-laden foods constantly. Being 6'5", 230# makes one eat alot.
Oh, and I'm not a big veggie eater. I regularly consume just a few different ones and that's it. Not big on fruits, either. My body pretty much runs on simple carbs quelled from bread-like foods. The daily multivitamin helps, too.
During fast periods, I tend to eat like a Russian: lots of pasta, and I mean LOTS of pasta. Yet I don't seem to lose much weight, if I do at all...maybe 5# the entire 40 days of Great Lent. I've been blessed with a metabolism that can somehow easily switch between my regular carnivorous diet and a carb-laden diet. I don't really up the exercise regimen much during fast periods, either. I can't quite explain it, but I'm darned glad my body works this way.