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Your thigh bone is the longest and strongest bone in your whole body.

Your thigh bone is the longest and strongest bone in your whole body.

It is the big bone in your upper leg. It is strong enough to help you jump and run all day.

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Your heart beats about 100,000 times every day. Your heart beats about 100,000 times every day. You are a little taller in the morning than at night. You are a little taller in the morning than at night. You can’t tickle yourself. You can’t tickle yourself. Your bones are alive, and they grow with you as you get bigger. Your bones are alive, and they grow with you as you get bigger. Babies are born with about 300 bones, but grown-ups have only 206. Babies are born with about 300 bones, but grown-ups have only 206.