We've all heard about crazy pregnancy cravings: Pickles with ice cream, dirt, flavored potato chip crumbs -- just the crumbs. Sometimes a craving is just a craving. You're feeling emotional and a certain food just feels right. But a crazy food craving could also mean there's some nutrient you could use a little more of in your diet. So here's some cravings we've had heard about -- some bizarre, some totally predictable -- and what your body might actually be asking for.