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When you sleep, you grow by about 8mm (0.3in). The next day you shrink back to your former height. The reason is that your cartilage discs are squeezed like sponges by the force of gravity when you stand or sit.
Human bone is as strong as granite in supporting weight. A block of bone the size of a matchbox can support 9 tonnes – that is four times as much as concrete can support.
The only jointless bone in your body is the hyoid bone in your throat
It's impossible to sneeze with your eyes open.
Your stomach needs to produce a new layer of mucus every two weeks or it would digest itself.
It takes the interaction of 72 different muscles to produce human speech.
The average life of a taste bud is 10 days.
The average cough comes out of your mouth at 60 miles (96.5 km) per hour.
Relative to size, the strongest muscle in the body is the tongue.
Human thigh bones are stronger than concrete.
When you sneeze, all your bodily functions stop even your heart.
Babies are born without knee caps. They don't appear until the child reaches 2-6 years of age.
Children grow faster in the springtime.
It takes the stomach an hour to break down cow milk.
Women blink nearly twice as much as men.
Blondes have more hair than dark-haired people do.
There are 10 human body parts that are only 3 letters long (eye hip arm leg ear toe jaw rib lip gum).
Our eyes are always the same size from birth, but our nose and ears never stop growing.
In the average lifetime, a person will walk the equivalent of 5 times around the equator.
An average human scalp has 100,000 hairs.
The length of the finger dictates how fast the fingernail grows. Therefore, the nail on your middle finger grows the fastest, and on average, your toenails grow twice as slow as your fingernails.
Infants blink only once or twice a minute while adults average around 10.
As well as having unique fingerprints, humans also have unique tongue prints.
The left side of your body is controlled by the right side of your brain while the right side of your body is controlled by the left side of your brain.
It takes the body around 12 hours to completely digest eaten food.
Your sense of smell is around 10000 times more sensitive than your sense of taste.
Wearing headphones for an hour increases the bacteria in your ear 700 times.
It takes approximately 12 hours for food to entirely digest.
A baby is born without kneecaps. They appear between age 2 and 6.
Women blink nearly twice as much as men.
Brushing your teeth regularly has been shown to prevent heart disease.
Men can read smaller print than women; women can hear better.
Men get hiccups more often than women.
Human thigh bones are stronger than concrete.
