12 astounding facts about the human body – I
The heart is the hardest working muscle in the body. Every day, it creates enough energy to drive a semi-truck over 18 miles (30 kilometers). Over a lifetime, that’s equivalent to driving to the moon and back.
The brain is 60 percent fat, but it still works hard. At any given time, your brain can generate up to 25 watts of power – that’s enough to power a light bulb.
Skin is the human body’s largest organ and is constantly renewing itself. Your skin sheds 50,000 cells every minute. Over a lifetime, that piles up to 40 pounds (18.1 kilograms) of skin.
Your brain is always working, and it is actually more active while you’re sleeping. Scientists say the average person has roughly 70,000 thoughts each day.
WOMB WITH A VIEW
Babies in the womb grow 8,000 new brain cells every second. Newborn babies can recognize their mother’s face after just a few hours.
The brain itself doesn’t have any pain receptors, so it doesn’t feel anything. That is why surgeons can perform open brain procedures on patients while they are awake.
During an average lifetime, the heart will pump nearly 1.5 million barrels of blood. A pumping human heart can squirt blood 10 yards (9.1 meters).
The typical human sneeze travels at just under 40 mph (64 kph). That’s the same speed as a running tiger!
If your arteries, veins and capillaries were laid out end to end, they would measure 62,137 miles (100,000 kilometers). That’s nearly enough to stretch two and a half times around the planet!
Your hair grows nearly one-quarter of an inch (6 millimeters) every four weeks and keeps on growing for up to six years. The hair then falls out, and another grows in its place.
There is enough iron in a body to make a metal nail measuring up to three inches (7.6 centimeters) long.
EYE FOR DETAIL
If the human eye were a digital camera, it would have 576 megapixels. An eye can distinguish about 10 million different colors.