9 Interesting Facts About Our Human Body - Part 3

- Over an average human lifetime, a human heart beats more than 3 billion times.

- Blood circulates around 12,000 miles (19,000 km) a day in an adult human. This is like traveling across the Pacific Ocean from east to west.

- The average human produces around 3 to 8 ounces of feces a day (1kg=35once).

- The stomach of an adult can hold more than 1.9 liters of food. This is enough to fill four-wide or eight small glasses of drink.

- People spend about 5 years of their lives to eat.

- The word "muscle" comes from the Latin word musculus, or "little mouse." A flexing muscle looked like a mouse moving under the skin, the Romans thought.

- In a human body, the quickest muscles are the ones that twitch the eyes. In less than a hundredth of a second, they will contract. A human will blink their eyes more than 11,500 times in just one day.

- In a lifetime, a human can consume around 35 tons of food.

- In his or her lifetime, an average person walks about 160,934 km, which is like walking four times around the world at the equator.

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