Year 6 · Science · The circulatory system · Lesson 3
Diet, exercise, drugs and health
How exercise, a balanced diet, smoking, alcohol and medicines affect the heart and body, with a fair test on exercise and heart rate.

13-minute video lesson
Teaching, worked examples and 20 practice questions solved step by step.
Watch free for a monthWhat your child will learn
- Explain how exercise affects heart rate
- Describe a balanced diet
- Explain harmful effects of smoking and alcohol
- Plan a fair test
The method
- Choice.
- Body part.
- Helpful or harmful?
- Why.
Key words: exercise, balanced diet, nicotine, tar, alcohol, medicine.
Worked examples
The first three practice questions from the lesson, with every step.
Question 1
What happens to your pulse when you run?
- Step 1: Up
Answer: it gets faster
Question 2
Why do you breathe faster during exercise?
- Step 1: Oxygen
Answer: to take in more oxygen for the muscles
Question 3
Name a benefit of exercise for the heart.
- Step 1: Stronger
Answer: it makes the heart stronger