The human brain generates more electrical impulses in a single day than all the phones in the world put together.
The human heart can create enough pressure to throw blood up to 30 feet into the air if a major artery is severed.
Humans lose about 600,000 skin particles every hour, which is about 0.7 kilograms of skin every year.
The total length of all blood vessels in the average adult is about 96,560 kilometres. That’s 2.5 times around the Earth.
Babies are born with 300 bones, but in adulthood the number is reduced to 206, as some bones fuse together.
The human eye can distinguish between about 10 million different colours.
The human body produces enough heat in 30 minutes to boil about 2 litres of water.
Stomach acid is strong enough to dissolve razor blades.
The average person will produce about 23,600 litres of saliva in their lifetime.
The length of the foot paw is approximately equal to the length of the forearm, making it a quick way to estimate measurements.