Kids are curious about all sorts of concepts and never stop bothering us with their thought-provoking, and annoying questions. Here are eight of them about the human body, and how to answer them.

1. Why does hair go grey?
2. Why do your hands go wrinkly in the bath?
3. Why do we blush?
4. What is a funny bone?
5. Why do men have nipples?
6. Why is urine yellow?
7. How fast is the fastest runner?
8. Do your ears grow all your life?

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