The length from your wrist to your elbow is the same as the length of your foot.
Your heart beats 101,000 times a day. During your lifetime it will beat about 3 billion times and pump about 400 million litres (800 million pints) of blood.
It is impossible to lick your elbow. Well, for almost everyone… but a few can.
Your mouth produces 1 litre (1.8 pints) of saliva a day.
The human head contains 22 bones.
On average, you breathe 23,000 times a day.
Breathing generates about 0.6g of CO2 every minute.
On average, people can hold their breath for about one minute. The world record is 21 minutes 29 seconds, by David
On average, you speak almost 5,000 words a day – although almost 80% of speaking is self-talk (talking to yourself).
Over the last 150 years the average height of people in industrialized nations increased by 10 cm (4 in).
In the 19th century, American men were the tallest in the world, averaging 1,71 metres (5’6″). Today, the average height for American men is 1,763 m (5 feet 9-and-half inches), compared to 1,815 m (5’10″) for Swedes, and 1,843 m (5’11″) for the Dutch, the tallest Caucasians.
The tallest nation in the world is the Watusis of Burundi: 1.98 m (6 feet 6 inches) tall.
If the amount of water in your body is reduced by just 1%, you’ll feel thirsty.
It is impossible to sneeze and keep one’s eyes open at the same time.
55% of people yawn within 5 minutes of seeing someone else yawn.
A person can live without food for about a month, but only about a week without water.