In this paper, I synthesize recent work in the philosophy of action to propose an analytic reconstruction of the concept of habit. My main point is that habit (or habitus) can be a central, not just supplemental or auxiliary concept in action theory and the explanation of action. To show this, I systematically analyze the way habits can be used as a resource to explain action while comparing the way habits explain action with the standard way we explain action as being caused by the interplay of beliefs, desires, and intentions. I point to the specific "historical" way that habits can be seen as causes of action and show that the conceptual commitments of habit-based explanations are both more substantial and more robust than intention-based explanations. Once formed, habits act as inclinations and dispositions, being reliably triggered in the requisite context by the appropriate circumstances. Finally, I analyze the core concept of automaticity as applied to habit. I argue that since automaticity is not a unitary concept, different features of automaticity are more central to habit than others, allowing us to differentiate the most representative members of the habit category from more peripheral members.