Hear Your Heartbeat
You need
- A cardboard tube (or just your hand)
- Space to jump
Let's play
- Sit still and put your hand on your chest. Feel your heart beating.
- Listen through a tube held to a grown-up’s chest.
- Now jump like a frog for 30 seconds!
- Feel again. Is your heart faster or slower now?
Grown-up tip: The heart beats faster to send more blood to busy muscles.