There is evidence to suggest that out bodies crave nutrients and that by eating nutrient deficient foods, we are setting ourselves up for weight gain as our bodies tell us we aren't getting enough of something. We can easily go over our calories if we are eating high carb/fat foods low in nutrients, but our bodies are 'starving' because we do not feed them the right foods full of all the good fuels we need to function properly.

I updated my sparkpage today with this:
"Recent studies show that middle-aged women who are low in vitamin B, were more likely to experience serious nighttime carb cravings than those who regularly took a vitamin." Brian Wansink

Do you only focus on calories when food tracking, or are you looking at your overall nutrition?