Children's Health, Respiratory Inflammation and Short-term Air Pollution

This study looks at how short-term air pollution affects children's respiratory (breathing) health and inflammation. Researchers will track air quality and health markers in schoolchildren in Central and East London. **You may be eligible if...** - You are a child attending a school in Central or East London that has been recruited into the study - Your parents are able to provide consent on your behalf **You may NOT be eligible if...** - You are unable to participate in physical education lessons due to safety concerns, as reported by your parents - You have a learning or physical disability that prevents you from giving assent or following study instructions Talk to your doctor to see if this trial is right for you.