Regular physical activity provides physical, mental and cognitive benefits for children. However, globally, only 20% of children meet the recommended levels of physical activity and, on average, students sit for three-quarters of the school day. Active breaks are a well-tested component of many school-based physical activity interventions, but there are many barriers to the sustainable implementation of active breaks by teachers in schools. To overcome these barriers, the narrow, traditional idea of the 'brain break' needs to be reconceptualized, where active breaks are viewed as being separate from learning and teaching, and where physical activity is perceived as an interruption to learning. This article presents the TransformUs Active Break (TAB) model, which positions active breaks as part of an overall approach to proactive classroom management and as a key contributor to effective teaching. The TAB model comprises five types of active breaks, each serving a specific educative function-structure, transition, manage, energize and learn. The model demonstrates how active breaks can be integrated meaningfully into lessons to enhance teaching and learning as an effective approach for sustained school-based physical activity.