You'd be surprised. After a couple weeks of obsessively counting calories and ingredients you get really good at estimating the caloric value of food. It's no

You'd be surprised. After a couple weeks of obsessively counting calories and ingredients you get really good at estimating the caloric value of food. It's not hard to look at a sandwich and say "Oh, about 800." And if you're plus or minus 100, who cares? You don't have to be perfect, just show continued weight loss.