Amazing Body Facts

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Amazing Body Facts1The average red blood cell lives for 120 days. 2There are 2.5 trillion (give or take) of red blood cells in your body at any moment. To maintain this number, about two and a half million new ones need to be produced every second by your bone marrow.That's like a new population of the city of Toronto every second. 3Considering all the tissues and cells in your body, 25 million new cells are being produced each second. That's a little less than the population of Canada - every second ! 4A red blood cell can circumnavigate your body in under 20 seconds. 5Nerve Impulses travel at over 400 km/hr (25 mi/hr). 6A sneeze generates a wind of 166 km/hr (100 mi/hr), and acough moves out at 100 km/hr (60 mi/hr).

7Our heart beats around 100,00 times every day. 8Our blood is on a 60,000-mile journey. 9Our eyes can distinguish up to one million colour surfaces and take in more information than the largest telescope known to man. 10Our lungs inhale over two million litres of air every day, without even thinking. They are large enough to cover a tennis court. 11We give birth to 100 billion red cells every day. 12When we touch something, we send a message to our brain at 124 mph 13We exercise at least 30 muscles when we smile. 14We are about 70 percent water. 15We make one litre of saliva a day. 16Our nose is our personal air-conditioning system: it warms cold air, cools hot air and filters impurities. 17In one square inch of our hand we have nine feet of blood vessels, 600 pain sensors, 9000 nerve endings, 36 heat sensors and 75

pressure sensors. 18We have copper, zinc, cobalt, calcium, manganese, phosphates, nickel and silicon in our bodies. 19It is believed that the main purpose of eyebrows is to keep sweat out of the eyes. 20A person can expect to breathe in about 40 pounds of dust over his/her lifetime. 21There are more living organisms on the skin of a single human being than there are human beings on the surface of the earth. 22From the age of thirty, humans gradually begin to shrink in size. 23Your body contains enough iron to make a spike strong enough to hold your weight. 24The surface area of a human lung is equal to that of a tennis court. 25Most people have lost fifty per cent of their taste buds by the time they reach the age of sixty. 26The amount of carbon in the human body is enough to fill about 9,000 'lead' pencils. 27One square inch of human

skin contains 625 sweat glands. 28When you blush, your stomach lining also reddens. 29The human body has less muscles in it than a caterpillar. 30If you could save all the times your eyes blink in one life time and use them all at once you would see blackness for 1.2 years! 31The life span of a taste bud is ten days. 32It's impossible to sneeze with your eyes open. 33Give a tennis ball a good, hard squeeze. You're using about the same amount of force your heart uses to pump blood out to the body. 34The aorta, the largest artery in the body, is almost the diameter of a garden hose. 35Capillaries, on the other hand, are so small that it takes ten of them to equal the thickness of a human hair. 36Your body has about 5.6 liters (6 quarts) of blood. This 5.6 liters of blood circulates through the body three times every minute. 37The heart

pumps about 1 million barrels of blood during an average lifetime--that's enough to fill more than 3 super tankers. 38Babies start dreaming even before they're born. 39The human body can function without a brain. 40Humans are the only primates that don't have pigment in the palms of their hands. 4110% of human dry weight comes from bacteria. 42There is more bacteria in your mouth than the human population of the United States and Canada combined . 43Every square inch of the human body has an average of 32 million bacteria on it. 44A fetus acquires fingerprints at the age of three months 45You sit on the biggest muscle in your body, the gluteus maximus a.k.a. the butt. Each of the two cheeky muscles tips the scales at about two pounds (not including the overlying fat layer). 46The tiniest muscle, the stapedius of the middle ear , is just

one-fifth of an inch long. 47The average human head weighs about 10 pounds. 48The average human brain weighs three pounds. 49The DNA helix measures 80 billionths of an inch wide. 50Your eyeballs are three and a half percent salt. 51Head lice actually prefer to live on clean heads, not on dirty ones. 52If Barbie were life-size, her measurements would be 39-23-33. She would stand seven feet, two inches tall and have a neck twice the length of a normal human's neck. 53It takes about 20 seconds for a red blood cell to circle the whole body. 54An average human drinks about 16,000 gallons of water in a lifetime. 55Beards are the fastest growing hairs on the human body. If the average man never trimmed his beard, it would grow to nearly 30 feet long in his lifetime. 56Humans shed about 600,000 particles of skin every hour - about 1.5 pounds a

year. By 70 years of age, an average person will have lost 105 pounds of skin. 57It only takes 7lbs of pressure to rip your ear off. 58When you sneeze, all your bodily functions stop - even your heart. 59Human teeth are almost as hard as rocks. 60You burn more calories sleeping than you do watching T.V. 61Our eyes never grow, and our nose and ears never stop growing. 62The thumbnail grows the slowest; the middle nail grows the fastest 63Children grow faster in the springtime. 64Women blink nearly twice as much as men. 65You can only smell 1/20th as well as a dog. 66People are the only animals in the world who cry tears. 67Every month you grow a brand new outer layer of skin..."a new you!". 68In your very own lifetime, you'll produce enough spit to fill two swimming pools. 69You breathe in about 7

quarts of air every minute. Good ! Air is cost free.. 70Your dad sweats enough each day to fill up a 6 pack of soda cans...and then some. 71Every time you lick a stamp, you're consuming 1/10 of a calorie. 72If you yelled for 8 years, 7 months and 6 days, you would have produced enough sound energy to heat one cup of coffee. 73If you toot consistently for 6 years and 9 months, enough gas is produced to create the energy of an atomic bomb. 74The human heart creates enough pressure when it pumps blood, that it could squirt blood 30 feet. 75Banging your head against a wall uses 150 calories an hour. 76On average people fear spiders more than they do death. 77Americans on the average eat 18 acres of pizza every day. 78Did you know that you are more likely to be killed by a champagne cork than by a poisonous spider? 79Right-handed people

live, on average, nine years longer than left-handed people do. 80If you blink one eye you move over 200 muscles. 81The length of your foot is the same as that of your forearm between your wrist and the inside of your elbow. 82In 24 hours, the blood in the body travels a total of 12,000 miles - that's four times the width of North America. 83The human gut contains about 1kg (2.2 lbs) of bacteria. In fact, there are more bacteria growing in and on the body than there are human cells. 84Humans have more facial muscles than any other animal on earth - 22 on each side of the face. 85Before their first birthday, average babies will have dribbled 255 pints of saliva. By the time they're two years old, they will have crawled 93 miles. 86The human hand contains three main nerves, two major arteries and 27 different bones - more of the body is devoted to controlling the hands

than any other part of the body. 87In the average lifetime, we spend five years eating and we consume around 7,000 times our own weight in food. 88When we go to sleep and enter REM (Rapid Eye Movement),our bodies become completely paralysed as areas of the brain that control movement are de-activated. It is this that stops us falling out of bed. 89By the time a woman has reached her 60s, she will have released around 450 baby making eggs 90When full, the human bladder can hold two pints of urine. 81The length of your foot is the same as that of your forearm between your wrist and the inside of your elbow. 82In 24 hours, the blood in the body travels a total of 12,000 miles - that's four times the width of North America. 83The human gut contains about 1kg (2.2 lbs) of bacteria. In fact, there are more bacteria growing in and on the body than there are human cells.

84Humans have more facial muscles than any other animal on earth - 22 on each side of the face. 85Before their first birthday, average babies will have dribbled 255 pints of saliva. By the time they're two years old, they will have crawled 93 miles. 86The human hand contains three main nerves, two major arteries and 27 different bones - more of the body is devoted to controlling the hands than any other part of the body. 87In the average lifetime, we spend five years eating and we consume around 7,000 times our own weight in food. 88When we go to sleep and enter REM (Rapid Eye Movement),our bodies become completely paralysed as areas of the brain that control movement are de-activated. It is this that stops us falling out of bed. 89By the time a woman has reached her 60s, she will have released around 450 baby making eggs 90When full, the human bladder can hold two pints

of urine. 81The length of your foot is the same as that of your forearm between your wrist and the inside of your elbow. 82In 24 hours, the blood in the body travels a total of 12,000 miles - that's four times the width of North America. 83The human gut contains about 1kg (2.2 lbs) of bacteria. In fact, there are more bacteria growing in and on the body than there are human cells. 84Humans have more facial muscles than any other animal on earth - 22 on each side of the face. 85Before their first birthday, average babies will have dribbled 255 pints of saliva. By the time they're two years old, they will have crawled 93 miles. 86The human hand contains three main nerves, two major arteries and 27 different bones - more of the body is devoted to controlling the hands than any other part of the body. 87In the average lifetime, we spend five years eating and we consume

around 7,000 times our own weight in food. 88When we go to sleep and enter REM (Rapid Eye Movement),our bodies become completely paralysed as areas of the brain that control movement are de-activated. It is this that stops us falling out of bed. 89By the time a woman has reached her 60s, she will have released around 450 baby making eggs 90When full, the human bladder can hold two pints of urine. 91In a lifetime, a human being will grow six feet of nose hair and shed 42 lbs of dead skin. 92A human being can look forward to having sex an average of 2,580 times with five different partners. 93Skin can now be artificially grown.One amazing result of this is that the skin from one hand could be grown into enough to cover six football pitches.. 94There are 137 million light sensitive cells in the eye's retina and the fluid that fills the eye is changed 15 times a day.

95Humans and dolphins are the only species that have sex for pleasure. 96The average person falls asleep in seven minutes. 97During your lifetime, you'll eat about 60,000 pounds of food, that's the weight of about 6 elephants! 98In space, astronauts cannot cry, because there is no gravity, so the tears can't flow! 99Your ribs move about 5 million times a year, every time you breathe! 100Most dust particles in your house are made from dead skin! 101A hard working adult sweats up to 4 gallons per day. Most of the sweat evaporates before a person realizes it's there. 103At birth we have over 300 bones. As we grow up, some of the bones begin to fuse together as a result an adult has only 206 bones. 104The human hand has 27 bones. 107The femur/thigh bone is the longest bone in our body, it is about a quarter of ones height.

108The human body has 230 movable and semi- movable joints 109Our Brain has over 100 billion nerve cells. 110The human skull is made up of 29 different bones. 111A newborn baby's brain grows almost 3 times during the first year of life. 112The left side of human brain controls the right side of the body and the right side of the brain controls the left side of the body. 113The length of human blood vessel is such that it circles the globe 2 ½ times. 116The human heart beats 30 million times a year. 11780 hairs are likely to fall every day. 118The muscles of the eye move more than 100,000 times a day.. 119We breathe 13 pints of air every minute. 120Human skin has a tendency to shed 40 pounds of skin in lifetime. 121Human kidneys have about 1 million nephrons that filters out liquids and wastes.

122Our heart beats around 100,00 times every day. 123Human blood is on a 60,000mile journey. 124Fingernails contain keratin and they seem to be strongest component in the human body. 125The human skin contains 45 miles of nerves. 126Most people blink about 25 times per minute. 127For every 2 weeks, the human stomach produces new layer of mucous lining, otherwise the stomach will digest itself. 128An average of 17 muscles contracts for a smile. 129Every person has a unique tongue print. 130A sneeze moves out of our mouth at a speed of 100 meters per hour. 131An average human eye blinks about 6,205, 000 times. 132The tooth is the only part of the human body that cannot heal and repair by its own. 133In one square inch of skin there are 4 yards of nerve fibers. 134The human eye has the ability to

distinguish about 1 million color surfaces. 135A square inch of skin has 100 sweat glands. 138The human ear can distinguish between hundreds of thousands of different sounds. 141On an average the human scalp has about 100,000 hairs. 142Nails of toes or fingers take about 6 months to grow from base to tip. 143A square inch of skin consists of 1300 nerve cells. 144On an average an individual produces human being consumes about 500 kg of food per year. 145The adult human brain is about 2 % of total body weight. 146On an average 1.7 liters of saliva produces each day. 147In one square inch of skin, there are 3 million cells. 148The human body consists of over 600 muscles. 149As we get older, the brain loses almost one gram per year.. 138The human ear can distinguish between hundreds of thousands of different sounds.

141On an average the human scalp has about 100,000 hairs. 142Nails of toes or fingers take about 6 months to grow from base to tip. 143A square inch of skin consists of 1300 nerve cells. 144On an average an individual produces human being consumes about 500 kg of food per year. 145The adult human brain is about 2 % of total body weight. 146On an average 1.7 liters of saliva produces each day. 147In one square inch of skin, there are 3 million cells. 148The human body consists of over 600 muscles. 149As we get older, the brain loses almost one gram per year.. 150Esophagus/or food pipe, which is the passage for the food we eat to the stomach, is approximately 25 cm long. 151A square inch of skin consists of three yards of blood vessel. 152There are about 13, 500,00 neurons in the human spinal cord.

153The human tongue has 10,000 taste buds. 154The cells of taste buds are constantly being renewed, roughly on every ten hours. 155An average human head weighs about 8 pounds. 156Our eyes are always the same size from birth, unlike our nose and ears. 157The human body is composed of 80 percent of water. 158The human eyeball is 24.5 mm long. 159The total weight of skin in an average human adult is 61 pounds. 160Taste buds are present inside the mouth and also at the roof of the mouth. 161The human spinal cord is 45 cm long in men and 43 cm long in women. 162The weight of human cerebellum is 150g. 163The strongest muscles of the human body are masseters, which are present on either side of the mouth. 164The human liver performs 500 different functions. 165The heart muscles will stop working only when

we die. 166Children have more sensitive ears than adults. 167Shivering is a way of trying to keep our body warm. 168Humans have the ability to distinguish 4,000 to 10, 000 smells. 169Every hour, the human eye can process 36,000 bits of information. 170Nails and corneas are the only two tissues in the body that do not receive oxygen from blood. 171The length of the finger indicates how fast the nail grows. The nail of the middle finger grows faster than others. 172The human ears can hear in the frequency of 1,000 to 50, 000 hertz. 173The total surface area of the human brain is about 25, 000 square cm's. 174When the sounds are above 130 decibels, it causes pain to the ears. 175There are around 100 receptors in each of our fingertips. 176The weight of skin in a human adult is 4 to 5 kg. 177The middle part of the

back is the least sensitive part of our body. 178Children have better sense of smell than adults. 179The eyelashes shed by a human in his entire life is of 30 m of length. 180After death, the body starts to dry out creating an illusion that the nails and hairs are growing even after death. 181The surface of human skin is 6.5 square feet. 182Every second, 15 million blood cells are destroyed in the human body. 183An average human being will breathe about 23,040 times per hour. 184The base of the spinal cord has a cluster of nerves, which are most sensitive. 185The surface area of the human lung is equal to that of a tennis court. 186When we reach 60 years of life, we lose 50 % of our taste buds. 187Blinking of one eye causes movement of 200 muscles. 188Platelets, which are one of the constituents of the blood is produced at

the rate of 200 billion per day. 189The sense of taste is the weakest of the five senses. 190Humans have the ability to differentiate about 10, 000 odour. 191It takes time for the newborn baby to learn to turn the pictures right side up, as it sees the world upside down in the beginning. 192If human sense of smell is affected, sense of taste is also affected as the brain interprets signals from the nose and tongue. 193There are around 1,200,000 optic fibers in the human eye. 194The lens of the human eye is composed of 65 % of water and 3 % of protein. 195We shut our eyes for 0.3 seconds, when we blink. 196Color blind people find it hard to distinguish colors like green and red. 197A blink of an eye lasts for 1/10th of a second. 198Eyes are the only part of the human body that functions at 100 percent ability at any movement.

199The human skin contains 280,000 heat receptors. 200A drop of blood contains 250 million cells. 201The liver is the largest and heaviest internal organ of the body and weighs about 1.6 kilos. 202In the womb, the baby's body is covered by a thin layer of hair but as soon as the baby is born it disappears. 203At birth every one is color blind. 204Babies crawl to an average of 200 m a day. 205The only jointless bone in the human body is the hyoid bone, which is present in the throat area. 206A baby gender is determined after the first 6-8 weeks of pregnancy. 207Eating Break fast helps to burn 5 to 20 percent of calories throughout the day. 208The surface of human tongue is covered with 100 of tiny structures called papillae. 209On an average, a persons left hand does 56 % of typing. 210On an average the cough

that comes out of our mouth is 60 m per hour. 211A person can live without food for about a month, but only a week without water. 212Threshold pain of women is 9 times stronger than men. 213The palms of the hands and soles of the feet contain more sweat glands than other parts of the body. 21410 % of men and 8 % of women are left-handed. 215On an average the human body contains enough water to fill 1 gallon of a tank. 216An average human body contains enough amount of fat to make seven bars of soap. 217The human body releases growth hormones during sleep. 218Red blood cells are about seven micrometer in diameter. 219The thighbone is so strong that it withstands the axial load of about 1600-1800 kilos. 220An average adult male brain weighs about 1375 grams. 221On an average the weight of an adult female brain is about 1275

grams. 222Only four percent of the brains cells work and the remaining cells are kept in reserve. 223On an average thousands of neurons dies every day. 224The human eye has 110-130 million receptors to perceive light. 225The human eye contains five to seven million receptors for color perception. 226The human eye cannot perceive a motionless image. 227The average life span of a sperm is about 36 hours. 228The life span of an ovule is about 12 - 24 hours. 229Only one person in two billion will live for more than 115 years of life. 230On an average, we speak about 5,000 words per day. 231Intelligent people have more zinc and copper in their hair. 232Liver is the only organ of the body, which regenerates itself completely even after being removed completely. 233The human heart pumps 6,000 liters of blood daily

through a man lifetime. 234The human brain is capable of creating more ideas equivalent to that of the atoms of the universe. 235Hair is the fastest growing tissue in the body, the next being bone marrow.. 236On an average, in an adult scalp 35m of hair fiber is produced every day. 237An average scalp has 100,000 hairs. 238The maximum length of hair can be 70 to 90 cm's. 239The life span of hair is two to seven years. 240Frequent washing of hair does not cause hair loss. 241Brain uses 20 % of our body energy and makes up only 2 % of our body weight. 242Any damage to brain cells cannot be repaired completely. 243Human brain stops growing at the age of 18. 244Male hairs are denser and grow faster than females. 245Depending on the area of the human body, the thickness of the skin varies from ½ to 6 mm.

246Tongue is the strongest muscle in the human body. 247A Pair of feet contains about 250,000 sweat glands. 248The human skin sheds and re-grows after every 27 days. 249A Blind person looses only about 1/5th of vision. 250One in every 2000 babies is born with a tooth. 251Pregnancy in women lasts on average of about 270 days from the time of conception till birth. 252Sneezing too hard can cause rib fracture and suppressing the sneeze can cause damage to the blood vessels of head or neck. 253On freeze drying, 10 % of body weight is contributed by the micro organisms of our body. 254About 80 % of ultra- violet rays from the sun can get through the cloud and can cause sunburn or tan even on a cloudy day. 255The human stomach contains about 35 million small digestive glands. 256The ovaries of a female contain about 600, 000

immature eggs at birth. 257The ovaries of a female contain about 600, 000 immature eggs at birth. 258The human body has 4 million pain sensitive structures. 259Each lung contains 300-350 million respiratory units called alveoli. 260Human blood contains 22,000 million cells. 261Human skin is re-newed itself every 5 weeks. 262A New stomach lining is formed every five days. 263A human ear contains about 24,000 fibers in it. 264The largest cell in the woman is the egg or ovum present that is released from the ovaries. 265Women burn fat more slowly than men. 266The leg bone is the fastest growing bone in the human body. 267There are 22 bones in the human skull. 268A muscle called the diaphragm controls the human breathing process. 269The human brain is made up of more than 10 billion nerve cells and over

50 billion other cells and weighs about less than three pounds. 2702/3 of the human body is made up of water. 271Vitamin C and E fights against Dementia - a disease of forgetfulness in the elderly person. 272Half a liter of water per day is lost through breathing. 273Drinking coffee prevents Parkinson's disease. 274Cold weather improves human memory and concentration. 275Most of the bones in the human body constitutes about 3/4 of water. 276An adult human body contains five to six quarts of blood and an infant has about one quart of blood. 277Blind people understand spoken words quicker than sighted people. 278A human lung contains about 700 million alveoli. 279Vitamin E protects the brain cells from damage caused by alcohol consumption. 280The human body contains more bacteria than the number of cells present in it.

281The longest muscle in the human body is sartorius, which is present in the hip region and it is commonly called as tailors muscle. 282Melanin, a pigment present in the skin is responsible for the color of the skin in a person. 283Except the heart and lungs, all other parts of the body receive their blood supply from the largest artery of the body, the aorta. 284The Pulmonary vein is the only vein in the human body that carries oxygenated blood while all the other veins of the body carry de-oxygenated blood. 285The human blood is colorless. It is the hemoglobin; a pigment present in the red blood cells is responsible for the red color of the blood. 286The smallest muscle in the human body is the stapedius, which is present deep inside the ear. 287The human brain is very soft like that of butter. 288A heartbeat is nothing but the sound produced by the

closure of valves of the heart when the blood is pushed through its chamber. 289Hold out your hand and make a fist. If you are a kid, the size of your heart is same as the size of your fist and if you are an adult it is about the same size as twice as your fist. 290About 500 million sperm mature every day in a normal male adult. 291Sixty percent of the human body nerve ends in the forehead and the hands. 292A human body contains about 200,000 temperature detectors.. 293A human body has 500,000 touch detectors. 294If all the alveoli from both lungs were spread flat they would cover an area nearly the size of a tennis court. 295Each human eye contains 130 million light receptors. 296The human scalp contains about 100,000 hair follicles, from which the hair grows. 297The human skeleton renews once in every three months. 298The human skin

cells multiply every second to replace the worn ones. 299The cells of the heart and brain do not multiply through out their lifetime. 300The whole leg constitutes of 31 bones. 300The whole leg constitutes of 31 bones. 301The human skull and upper jaw consist of 21 bones. 302When we see an image, the human eye captures the inverted image of it. It is the brains interpretation that makes us to see the upside down captured image in to a normal erect image. 303An average person laughs about 15 times a day. 304A womens heart beats faster than a mens. 305The average person is about a quarter of an inch taller at night. 306The food will get in to the stomach even if one stands on their head. 307The eyes have the fastest reacting muscle in the whole body. It contracts in 1/100th of a second. 308Almost every seven years, the human

body replaces the equivalent of an entirely new skeleton. 309Laughing and coughing creates more pressure on the spine than walking or standing. 310The human heart continues to beat even though it is taken out of the body or cut in to pieces. 311On an average, the human blood circulates the body for every 23 seconds. 312In an average person, it takes 8 seconds for food to travel down the food pipe,3-5 hours in small intestine and 3-4 days in large intestine. 313The brain continues to send out electric wave signals until approximately 37 hours after death. 314People under 30 years of age take in double the amount of oxygen as people over 80 years of age. 315The human body takes 6 hours to digest a high fat meal and it takes 2 hours for a carbohydrate meal. 316On an average an adults heart pumps about 4,000 gallons of blood each day. 317The muscles

of our body constitute 40% of our body weight. 318Iris is the part of the eye that determines the color of the eye. 319Red Blood Cells comprise about 40 % of blood volume. 320The human eye contains structures called Rods and cones. Rods register the shapes of images and respond to low levels of light and Cones responds to bright lights and registers the color of images. 321We tend to get cold very easily in the winter season because we are indoors and in close proximity to each other. 322Our Muscles often work in pairs so that they can pull in different or opposite directions. 323The left side of the human heart is much thicker and stronger than the right side 324Human blood is a make up of Red Blood Cells carrying oxygen, White Blood Cells that fight disease, Platelets that help the blood to clot and a liquid called plasma. 325Human hair is made up of a body

protein called keratin and it grows out of an opening of the skin called Follicle. 326Every day 440 Gallons of blood flows through the kidney. 327Red Blood Cells lasts only for about 4 months before they wear out. 328Every minute 30,000 to 40, 000 dead skin cells fall from our body. 329Straight hair lies flat because it is round and grows out of round follicles. 320The human eye contains structures called Rods and cones. Rods register the shapes of images and respond to low levels of light and Cones responds to bright lights and registers the color of images. 321We tend to get cold very easily in the winter season because we are indoors and in close proximity to each other. 322Our Muscles often work in pairs so that they can pull in different or opposite directions. 323The left side of the human heart is much thicker and stronger than the right side

324Human blood is a make up of Red Blood Cells carrying oxygen, White Blood Cells that fight disease, Platelets that help the blood to clot and a liquid called plasma. 325Human hair is made up of a body protein called keratin and it grows out of an opening of the skin called Follicle. 326Every day 440 Gallons of blood flows through the kidney. 327Red Blood Cells lasts only for about 4 months before they wear out. 328Every minute 30,000 to 40, 000 dead skin cells fall from our body. 329Straight hair lies flat because it is round and grows out of round follicles. 340If the blood vessels were laid from end to end, they would reach around the world four times. 341On an average, the human growth hormone, which is responsible for a person growth is produced at the rate of 500 micrograms per day at the age of twenty, 200 micrograms per day at the age of forty and 25

micrograms per day at the age of eighty. 342It is estimated that there are over 1, 000,000,000,000,000 connections in the human brain. 343Human brain constitutes 60 % of white matter and 40 % of grey matter. 344The average length of the human brain is about 167 mm and its average height is 93mm. 345A human heart pumps about 1,314,000 gallons of blood a year through its blood vessels. 346There are about 30 - 40 billion white blood cells present in our body to fight against infective and foreign organisms. 347The human bladder can stretch to hold about 400ml of urine. 348All the blood in our body passes 400 times through each kidney per day. 349The human Liver consists of 100,000 tiny clusters called lobules. 350On an average, the human stomach holds about 2 liters of contents. 351We produce 1 liter of saliva per day.

352The human sense of smell has the ability to identify the chemical smell of an object in one part per trillion of air. 353An average capillary is only 1mm. 354Humans have about 2 to 3 million sweat glands, which can produce up to 13 liters of sweat on a hot day. 355On an average, 100, 000 to 1000, 000 chemical reactions takes place in our brain. 3561,000,000,000,000 nerve cells are present in each and every person head. 357Liver cells take several years to replace themselves. 358The white part of our fingernail is called as Lunula. 359We are more likely to catch cold from a person by shaking his hand than from his sneeze. 360The shoulder blade is connected to the body by means of 15 different muscles and it is not attached to a single bone. 361The human brain uses 20 % of one blood and oxygen. 362A healthy liver

processes 720 liters of blood per day. 363Plaque begins to form 6 hours after brushing our teeth. 36459, 951 miles of blood vessels are present in our body. 365Newborns will cry out without tears for the first three to six weeks. 366The Nervous system transmits messages to the brain at the speed of 180 miles per hour. 367The human nose can remember 50,000 different smells. 368There is enough iron in the human body to make a small nail. 369Women have better sense of smell than men 370It is evaluated that the human eye can detect over 10,000,000 different colors. 371The wax present inside the ear is made up of oil and sweat. 372The female body is capable of giving birth to 35 children in one lifetime. 373The spinal cord, which controls over 10 billion nerve cells, is less than two feet in length and its diameter is same as

that of the index finger. 374In the middle of the day, our eyesight will be sharper. 375A newborn baby has more than 26 billion cells. 376Sneezing clears dirt from the nose. 377Inner ear is the main organ of balance. 378Yawning brings more oxygen to the lungs. 379Coughing clears mucous secretion from the throat. 380Human speech is produced by the interaction of 72 muscles. 381A New born baby loses about half of its nerve cells before it is born. 382A neglected child brain can be substantially smaller than that of a healthy child. 383On an average, the number of connections in the brain increases from 50 trillion to 1 quadrillion in a newborn during his first month of life. 384On an average it takes about 13 days for a grey hair to grow. 385Healthy human hair emits sound. 386The human brain stores

memories of fear. 387The nerve cells present in the nose, allows us to smell and regenerates through out ones life. 388Reading aloud to children helps to stimulate brain development. 389A hair grows by 0.3 to 0.5 mm per day, 1 to 1.5 cm per month and 12 to 15 cm per year. 390Children lose an average of 90 hairs per day, which increases to 120 by old age. 391A childs ability to learn can increase or decrease by 25 % or more depending on whether the child grows up in a stimulating environment. 392On an average a persons head has 100, 000 to 150, 000 hair. 393A single hair has the ability to support up to 100 grams of weight and the whole hair has the ability to support up to 12 tones of weight. 394The pigment of human hair is produced in the shaft of hair beneath the skin. 395In lifetime, the human heart pumps about 1 million barrels of blood, which

is enough to fill more than three tankers. 396The width of an average human brain is 140 mm. 397It takes 5- 30 seconds to chew food. 398Swallowing of the food takes about 10 seconds. 399The enzyme in the stomach that breaks down alcohol is produced less in men than women. 400In a year on an average person sleeps for 122 days out of 365 days. 401There are around 9,000 taste buds present on the tongue. 402Capillaries are so small that it would take ten of them to equal the thickness of a human hair. 403It is impossible to tickle our selves. 404In a human body, the small intestine is 21 feet and the large intestine is 6 feet long. 405For every 24 hours, in a healthy adult, more than a gallon of water containing over an ounce of salt is absorbed from the intestine. 406The right side of the human brain is responsible for

self-recognition. 407Men listen with the left side of the brain and women use both sides of the brain. 408In a lifetime, the human kidneys clean over 1 million gallons of blood. 409Identical twins have identical DNA but not identical fingerprints. 410Babies recognize sounds while in mothers womb. 412Human bone is as strong as steel but 50 times lighter 413Bones make up only 14% of our weight 414The brain is faster than a super computer processing billions of signals per second. Vishwanath Ananad the Indian Chess grandmaster has many times beaten the computer at chess. 416Seven out of ten people cross their left arm over their right 417Your foot contains 25% of all the bones within your body. 418Human eye is the only multi-focus lens in the world which can adjust in 2 milliseconds 421Human brain is the most powerful computer

which has the processing speed of 3000+ Ghz 422The gastric acid in your stomach is so powerful that it is able to eat away an iron table in about 5 minutes. 423sperm containing the xy chromosomes to become a male can swim faster but not for as long as the female xx chromosomes. 424The ears never stop growing through lifetime. 425The heart is accually more in the middle, just off to the left.