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If you lined up all your blood vessels, they could wrap around the Earth more than twice.

If you lined up all your blood vessels, they could wrap around the Earth more than twice.

Your arteries, veins, and tiny capillaries together stretch roughly 100,000 km. Most of them are microscopic capillaries — thinner than a hair — delivering oxygen to every cell in your body.

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More facts about Body

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.