Here is a page full of cool info on human bodies that can really make u think. If you have any you want to have added, just send me an email and I'll give u credit for it! Enjoy!! Human Sexuality Facts Most men have erections every hour to hour and a half during sleep. Humans and dolphins r the only animals known to have sex for pleasure. Hitler and Napolean only had 1 testicle. Only humans and horses have hymens. Largest erect penis measured 13 inches. The smallest erect penis was 1 3/4 inches ( I swear it was an ex of mine!) Death facts Humans can die from lack of sleep faster than starvation. Sleep deprivation will kill in 10 days. Starvation takes about 2 weeks. If you were to lay out every artery, vein, and capillary in a human body end to end, that person would most likely die. Most deaths in a hospital occur between 4pm and 6pm when the body is the weakest. If you were locked in a sealed room, you would die faster from carbon dioxide poisoning before you would from oxygen deprivation. 300 million cells die every second. In a mile...a foot...an inch... Each square inch of skin contains 20 feet of blood vessels. The surface area of the lungs is enough to cover 2 tennis courts. The human eye is so sensitive that in complete and total darkness it could detect a lit match 50 miles away. The total weight of all the humans on earth is 971,813,840,000 pounds. One square inch of skin on the hand contains 72 feet of nerve fiber. If all the space surrounding the nucleus of an atom making up the average human were to be removed, the person would be the size of half a flea...but still weigh the same. If the human voice could carry indefinately it would take 14 hours to travel from the west coast of the US to Australia. All the DNA in a human body could fit inside an ice cube, but if unwound it could reach from the earth to the sun 400 times. And finally.. Cough releases air at up to 60 mph. Nails take a whole 6 months to grow. We lose 40-100 strands of hair a day. Sneezes can go about 100 mph. Heart attacks are more common on Mondays. When looking at a computer screen for hours look at a white piece of paper..it should appear pink. The scalp contains an average of 100,000 hairs. The average person uses the bathroom around 6 times a day. Tongue prints are as individual as fingerprints. You consume 1/10 of a calorie each time you lick a stamp. If you were to go blind in one eye you will lose 1/5 of your vision and 100% of your depth perception. Jaw muscles can produce 200 pounds of pressure to close the mouth. The average person produces enough spit in a lifetime to fill 2 swimming pools. The body produces 2 million red blood cells every second. Human thighbones are stronger than cement. If all the muscles in the body were combined it would produce over 2,000 tons of strength. Cows fart an average of 300 times daily. Humans average 8 times. Human brain has the capacity of 200 megabytes. The tooth is the only part on the body that cannot repair itself. Serious stamp collectors have been found to be more on time for appointments. Most tropical marine fish can live in a tank of human blood. It takes 72 muscles to produce speech. But before you go! Other insane facts! If you yelled for 8 years, 7 months and 6 days, you would have produced enough sound energy to heat one cup of coffee. If you fart consistently for 6 years and 9 months, enough gas is produced to create the energy of an atomic bomb. A pig's orgasm lasts for 30 minutes. (How'd they figure this out, and why?) Banging your head against a wall uses 150 calories an hour. Humans and dolphins are the only species that have sex for pleasure. (Is that why Flipper was always smiling? And pigs get 30-minute orgasms? Doesn't seem fair) The strongest muscle in the body is the tongue. Right-handed people live, on average, nine years longer than left-handed people do. (If you're ambidextrous do you split the difference?) The ant can lift 50 times its own weight, can pull 30 times its own weight and always falls over on its right side when intoxicated. (From drinking little bottles of...? Did taxpayers pay for this research??) Polar bears are left handed. (Who knew....? Who cares? How'd they find out, did they ask them?) The catfish has over 27,000 taste buds. (What can be so tasty on the bottom of the pond?) The flea can jump 350 times its body length. It's like a human jumping the length of a football field. A cockroach will live nine days without it's head, before it starves to death. The male praying mantis cannot copulate while its head is attached to its body. The female initiates sex by ripping the male's head off.(Honey, I'm home. What the....) Some lions mate over 50 times a day.(In my next life I still want to be a pig ... quality over quantity) Butterflies taste with their feet.(That's almost as bad as catfish) An ostrich's eye is bigger than it's brain. (I know some people like that.) Starfish don't have brains.(I know some people like that too.)