This Kapow pupil video is part of the Kapow Science scheme of work. It is designed for pupils and explores what happens to the human body during a marathon. It begins by explaining the challenge of running 26.2 miles and how people train over time to prepare. The video shows how the body responds during a marathon—heart rate increases, breathing speeds up, and muscles work hard, often leading to sweating and dehydration. Pupils learn why staying hydrated is important and how runners use water to keep their bodies functioning properly.

The video also highlights the long-term health benefits of running, such as a stronger heart, improved lung capacity, and better circulation. It explains how runners recover after the race, including the use of space blankets to prevent their body temperature from dropping too quickly. The video ends by celebrating the achievements of marathon runners of all ages and abilities, showing how running can be both a personal goal and a way to help others.

The video is designed to be shown to pupils as part of Science, Mixed-age, Y5/6 (A): Making connections: How reflective are space blankets?, Y5/6 (A): Lesson 2: Investigating space blankets – Gathering data