Science Secrets · Drawing 25 of 40
My Heart Picks Up the Pace
The Human Body
When you move, your muscles need more oxygen. Your heart often beats faster to circulate blood. After playing, you can feel your pulse gradually slow.
Did you know?
The heart is a muscle that pumps blood.
Look together
What do you notice in your body after playing?
An idea to try
With an adult, gently find your wrist pulse at rest. Compare after comfortable movement you enjoy.
For the adult reading along
A little more to discover
Heart rate varies with activity and many other factors. This page invites observation without giving an expected value or assessing the child’s health.
Sources and illustration notes (1)
Simplified scene and shapes. Models, imagined comparisons and enlargements do not preserve all real measurements.
These links lead to other websites. Explore them with an adult. References identify the institution and the related lesson; some linked pages are in French.
- Nemours KidsHealth: Your Heart & Circulatory SystemWhen you move, your muscles need more oxygen. Your heart often beats faster to circulate blood. After playing, you can feel your pulse gradually slow.
Source review: 2026-10-12. Illustrations are simplified for colouring.
