Low levels of physical activity and prolonged sedentary behavior among young people are important contributors to the growing prevalence of overweight and obesity worldwide. Because children and adolescents spend a large proportion of their waking hours in school environments that often involve extended periods of sitting, schools represent a strategic setting for interventions aimed at promoting healthier movement behaviors and lifestyle habits. Classroom-based active breaks, defined as short bouts of physical activity integrated into regular lessons, have been proposed as a practical and scalable strategy to interrupt sedentary time without substantially disrupting academic instruction. This narrative review examines how active breaks have been implemented in school settings and synthesizes current evidence regarding their effects on physical activity, sedentary behavior, lifestyle-related outcomes, and obesity-related indicators among children and adolescents. Relevant literature published since 2006 was identified through searches of PubMed, Scopus, and Web of Science. The available evidence suggests that active breaks can increase in-school physical activity and reduce prolonged sedentary exposure, while also contributing to improvements in classroom behavior, cognitive engagement, and several lifestyle-related and psychosocial outcomes. However, direct effects on adiposity indicators appear modest and are often difficult to isolate because active breaks are frequently implemented within broader school-based health interventions. Overall, active breaks represent a feasible and low-cost strategy that may support healthier lifestyle behaviors and contribute to obesity prevention when regularly integrated into school routines.
Martone et al. (2026) studied this question.