The Action Plan to Prevent the Effects of Heatwaves on Health (POCS) is a comprehensive strategy developed by the Public Health Agency of Catalonia. It aims to mitigate health risks associated with heatwaves by implementing early warning systems, public education campaigns, and coordinated responses among healthcare providers. The plan focuses on protecting vulnerable populations, including the elderly, children, and individuals with chronic illnesses, by promoting preventive measures and ensuring timely medical assistance during extreme heat events.