Abstract Objective: To determine the effect of regular, structured physical activity sessions over a 12-week period on reducing perceived stress among school-going children aged 5-12 years. Study Design: Quasi-experimental study. Setting: Private Primary and Secondary Schools in Karachi, Pakistan. Period: 1st September 2025 to 1st February 2026. Methods: Children aged 5 to 12 years with baseline moderate stress and medically fit for physical activity were enrolled.
