Nature & science · Age 9 · Advanced Body Systems (circulation & Respiration)
Active Bodies – Why Moving More Means a Healthier Heart
Explore the science behind why physical activity improves heart and lung function.
Module
Advanced Body Systems (circulation & Respiration)
Age
Age 9
Duration
10 min
Questions
5
What's in this exercise
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Question 1
Multiple choice
The heart is a muscle. Like other muscles in the body, it becomes stronger when:
Question 2
Multiple choice
Which of these activities does NOT significantly strengthen the heart and lungs?
Question 3
Multiple choice
Why does a stronger heart help the whole body?
Question 4
True or false
Regular exercise helps both the heart and the lungs work better and last longer.
Question 5
Matching
Match each physical activity to the type of fitness benefit it mainly provides.
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Get started — it's freeMore exercises in this module
Graph Patterns – Understanding What Heart Rate Data Tells Us
Activity and Your Body – How Exercise Changes Breathing and Heart Rate
Inside the Circulatory System – Blood and Its Pathways
Breathing In – How Lungs Bring Oxygen into the Body
What Blood Carries – Oxygen and Nutrients on the Move
The Heart as a Pump – How It Keeps Blood Moving