Probiotics are friendly bacteria found in certain fermented foods (like yogurt). When you eat them, they set up shop inside your gut and help you digest food. Since these little guys are alive, that means that they need to eat too! They love prebiotics, which are small, nondigestible carbohydrates.

Prebiotics can be found in sizable amounts in certain vegetables, fruits and whole grains. Eating both pre- and probiotics together may be a good way to keep your bacteria friends happy (or, just you). Here are some fun pre-and-pro combos.