Because of cartilage compression in the spine, when you go to bed you are 1 cm shorter then when you wake.

Red blood cells do a circuit of your body every 60 seconds.

When you have to pee, your bladder can grow visibly.

Babies pretty much universally have blue eyes and humans eyes only change color due to UV rays.

On average, people in the Western Hemisphere will consume around 50 tonnes of food and 50,000 liters of liquid in a lifetime

Sometimes it can take up to 6 months to grow a fingernail or toenail back.

The muscles in your eyes contract around 100,000 times per day.

Your average person sheds approximately 40 pounds of skin in their lives.

20% of oxygen/calorie intake is needed just to run your brain.

Your kidney contains 1 million filters that clean 1.3 liters of blood every minute

A woman’s ovaries contain around 500,000 eggs, of those only 400 will have any opportunity to create life

Everybody has their own unique smell. Twins, however, do not.

The stomach creates cells faster than destroying them, that way it doesn’t destroy itself.

You produce around a pint of sweat per day through 500,000 sweat glands

When we gather information from our surroundings, 90% of it is through our eyes

It is almost impossible to tickle yourself.

Gross but true. Skin grafts for burn victims often is taken from babies foreskin

Your bones are actually 4 times stronger than concrete.

Straight from the “who the hell tested that?” files. The skin of an adult male will stretch to 20 feet

People produce enough saliva in their life to fill a swimming pool

Our Saliva has to dissolve something before we can taste it.

A man produces enough sperm in a day to replace the world’s population in 6 months.

Your body is capable of producing enough heat in 30 minutes to boil a gallon of water.

If you stretch the capillaries in your lungs from tip to tip they would reach from Los Angeles to Atlanta.

The amount you dream determines how intelligent you are. People who dream more have higher I.Q’s.