More than 700., How many muscles are in your body?, In our arms and legs, in our back and face., Where do you have muscles?, A big muscle., What is your heart?, It’s strong., Is your heart strong or safe?, It puts blood round your body., What does your heart do?, All day and all night. It never stops., When does your heart work?, When we’re excited or scared and when we exercise., When does your heart go faster?.

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