Abstract: A web, server, and mobile device-based system to aggregate individual health activities into simpler behavioral modules and manage the social propagation, synchronization, and incentivization of such behaviors in a networked population. The system and implemented methods addresses the failure of current behavioral change techniques to achieve persistent engagement with behavior change through a systematic reduction in complexity of information and decision-making burdens on individuals to manage such behaviors. The system aggregates individual behavioral events into modules called, Walks, and provides mechanisms to synchronize and other individuals through a structured group hierarchy and shared events designed to propagate such behaviors across the participating population. These mechanisms enable network efficiencies that amplify the effectiveness of particular material incentives through social synchronization and reinforcement mechanisms.