25- The average person produces enough saliva in their lifetime to fill up two swimming pools. 24- Most babies are born with blue eyes. Exposure to ultraviolet light (the sun) and melanin are what eventually bring out their true color. 23- Except for identical twins, every person on earth has a unique smell. 22- Your brain is demanding, as it uses about 20% of your entire body’s oxygen and caloric intake. 21- In order to taste something your saliva must be able to dissolve it. Hard to believe? Try drying off your tongue before eating your favorite candy. 20- Your bones are strong. Very strong. In fact, one matchbox sized chunk of bone can support over 9 tons of weight, or four times that of concrete. 19- For the next sixty seconds if you could follow one of your blood cells it would take you on a complete circuit of your body. 18- We are visual creatures, as almost 90% of the information we receive about our environment comes from our eyes. 17- On average, men produce about 10 million new sperm daily. That’s enough to repopulate the entire planet in 6 months. 16- Your skin is the largest organ in your body and in a male adult, if it were to be stretched out, it would cover roughly 20 sq ft. 15- To grow all the way from the base to the tip, your finger and toenails can take up to half-a-year. 14- The digestive acid in your stomach is strong enough to dissolve zinc, which begs the question, how on earth does it stay there? Simple, it’s because your stomach cells are renewed more quickly than the acid can destroy them. 13- A baby’s foreskin, which is no bigger than a postage stamp, can grow to be the size of 3 basketball courts in less than a month. This is why it is used extensively to treat burn patients. 12- Over the course of your lifetime, if you are an average human, you will shed about 40 lb of skin (18kg). 11- In each one of your kidneys there are 1 million filters that clean around 1.3 liters of blood every minute and push out close to 1.5 liters of urine daily. 10- In their lifetime, average westerners consume 50 tons of food and 50,000 liters of liquid. 9- You are hot. So hot, in fact, that in just 30 minutes your body can produce enough heat to boil a half gallon of water. 8- Sometimes people can just see you need to go to the bathroom…literally. Your bladder, when it is full, gets noticeably bigger. 7- A female’s ovaries have over half-a-million eggs, but only about 400 of them will ever get the opportunity to create life. 6- Your body contracts the muscles that focus your eyes about 100,000 times from sunup to sundown. If you wanted to give your legs an equivalent workout it would require walking at least 50 miles every day. 5- There are more than 300,000,000 capillaries in your lungs and if they were stretched out tip to tip they would reach over 1,500 miles – long enough to start in Los Angeles and end up in Atlanta. 4- You can’t tickle yourself. Go ahead. Try. 3- Your feet have roughly half-a-million sweat glands that can produce up to a pint of sweat daily. 2- By the time you go to bed at night you are about 1 cm shorter than when you woke up that morning. This is because the cartilage between your bones is compressed throughout the day. 1- A higher IQ is correlated with more dreams. Our conclusion? Nerds are dreamier. Source
I was interesting in this case. I started discussion about this on Science Forum http://www.thescienceforum.com/behavior-psychology/37943-why-we-cant-tickle-ourselves.html
