Body Facts

You are about 1 centimeter taller in the morning than in the evening!

Taking a single step involves coordinating around 200 muscle activations across approximately 20-30 major muscle groups in your legs, core, and hips.

The largest cell in the human body is the female egg and the smallest is the male sperm.

It's impossible to kill yourself by holding your breath.

By weight, human bone is five times stronger than steel.

The temperature of a fart at time of creation is 98.6 degrees Fahrenheit.

On the average a fart is composed of about 59% nitrogen, 21% hydrogen, 9% carbon dioxide, 7% methane, and 4% oxygen. Less than 1% is what makes them stink.

Consumption of TNT turns urine amber or deep red, which people often mistake for blood.

Your ears secrete more earwax when you are afraid than when you aren't.

Most people cannot lick their own elbow due to the length of the human arm and the limited range of motion in the shoulder and elbow joints.

The most orgasms recorded in an hour during clinical observation were 134 for a woman and 16 for a man.

One human hair can support 3 ounces.

Oxygen, carbon, hydrogen, and nitrogen make up 96% of the human body by mass.

If you are cold you are more likely to be hungry because you use energy to keep warm.

If you could uncoil all the DNA in your body and stretch it end-to-end, it would reach approximately 10 billion miles—enough to make a round trip from Earth to Pluto.

In ancient Egypt, priests plucked EVERY hair from their bodies, including their eyebrows and eyelashes.

Every year your body replaces 98% of your atoms.

It is very difficult to sneeze with your eyes open due to an involuntary reflex. The eye-closing is controlled by the same cranial nerve that triggers sneezing, creating an automatic protective response, though it's not actually to protect eyes from bacteria.

The average person's skin weighs about three times as much as their brain.

When your face blushes, the lining of your stomach turns red, too.

Children grow faster in the springtime than any other season during the year.

Enamel is hardest substance in the human body.

The penis of a barnacle may reach up to eight to nine times its body size.

Your body is creating and killing 2 million red blood cells per second.