In Google Analytics, the Behavior category is one of five main categories that you find on the left-hand sidebar. Andy says the categories are organized from the top of the funnel down to the bottom. The first category is Real-Time, or people on your website at the moment. Real-Time is followed by Audience (who those people are), Acquisition (where they came from), Behavior (what they did), and Conversions (who took which successful profitable action).
