You have 206 bones when you're grown up, and they make a great scaffold: your skeleton!
🦴 Bones
They support your body and protect your organs: the skull protects the brain, and the ribs protect the heart and lungs.
💪 Muscles
They pull on the bones to make you move. Bend your arm: can you feel the muscle bulge?
❤️ The heart
Place two fingers on your wrist: can you feel your pulse? Count the beats for 15 seconds, then do 20 jumps. What happens?
🫁 Lungs
When you run, you breathe faster: your muscles need air.
🏃 Mission: measure your resting pulse, then your pulse after 20 jumps, and again 2 minutes later. Record the 3 results in a table. Shop all
🎮 Want to play?
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