Brief, Scalable School-Based Yoga Program and Longitudinal Changes in Prosocial Emotion and Minor School Injuries: A Pilot Study

School-based injury prevention has traditionally emphasized environmental and educational approaches, whereas body-based interventions have received less attention. This pilot study examined longitudinal changes in gratitude and minor school injuries among primary school children participating in a brief video-based yoga program. A 10-minute structured yoga program was delivered once weekly via video during routine morning homeroom activities from September 2025 to February 2026. The program was provided universally in one public primary school and required no specialized facilities or trained instructors. Gratitude was assessed before and after the intervention, and monthly frequencies of school infirmary visits due to bruises and lacerations were examined across six observation periods. Among 187 children, gratitude increased significantly from pre- to post-intervention. The frequency of infirmary visits due to bruises changed significantly over time, whereas no significant temporal change was observed for lacerations. A brief, universally delivered, video-based school yoga program was associated with longitudinal changes in gratitude and bruises, but not lacerations. These preliminary findings suggest that such a program may be feasible for integration into routine school activities. Controlled studies are needed to determine whether these observed changes can be attributed to the yoga program.