There's a reason why you crave something sweet after polishing off a bag of potato chips. Chips, pretzels, and salty snack mixes are little more than quick-digesting simple carbs, which can spur insulin highs and subsequent lows, Dulan says. And since your taste buds and brain link fast-acting energy with sweet foods, it's common to have a craving for something sweet once you finish your salty nosh. What's more, thanks to a phenomenon known as sensory specific satiety, you can fill up on chips and feel like only your salty stomach is full. Your sweet one can still feel empty, Dulan says. So get ready to eat two stomachs' worth of food.