S2.3.7 For the adult
Exercise and rest
Why does my heart beat faster when I run?
What this chapter teaches
The pulse is the beat of the heart, felt at the wrist. Running makes it faster because working muscles need more blood. Games and running make bones and muscles stronger, but muscles mend and grow in rest and sleep.
Three questions to ask
There is no one right wording. Listen for the idea.
- What do you think happens to your pulse after you run, and why?
- How could a short count of your pulse tell you the beats in a whole minute?
- Why is rest part of getting stronger?
After the chapter, the learner can
- Count your pulse before and after running
- Explain how exercise and sleep keep bones and muscles strong
What they copy into their notebook
Two fingers on your wrist find your pulse. Count for 15 seconds and multiply by 4. Running makes your heart beat faster. Games and running make bones and muscles stronger. Muscles mend and grow in rest and sleep.