Rafed English

Did You Know? - Human Body

  • Did you know 11% of people are left handed
  • Did you know unless food is mixed with saliva you can't taste it
  • Did you know the average person falls asleep in 7 minutes
  • Did you know 8% of people have an extra rib
  • Did you know the smallest bones in the human body are found in your ear
  • Did you know stewardesses is the longest word that is typed with only the left hand
  • Did you know that you burn more calories eating celery than it contains (the more you eat the thinner you become)
  • Did you know all the blinking in one day equates to having your eyes closed for 30 minutes
  • Did you know your foot has 26 bones in it
  • Did you know the average human brain contains around 78% water
  • Did you know your brain uses between 20 - 25% of the oxygen your breathe
  • Did you know a 1/4 of your bones are in your feet
  • Did you know your tongue is the fastest healing part of your body
  • Did you know a 1 minute kiss burns 26 calories
  • Did you know you burn more calories sleeping than watching TV
  • Did you know an average person will spend 25 years asleep
  • Did you know the most common mental illnesses are anxiety and depression
  • Did you know your skin is the largest organ making up the human body
  • Did you know enamel is the hardest substance in your body
  • Did you know the hyoid bone in your throat is the only bone in your body not attached to any other
  • Did you know your most sensitive finger is your index finger (closest to your thumb)
  • Did you know the human body of a 70 kg person contains 0.2mg of gold
  • Did you know women blink twice as much as men
  • Did you know Scotland has the most redheads
  • Did you know household dust is made of dead skin cells
  • Did you know the word 'testify' derived from a time when men were required to swear on their testicles
  • Did you know you take over 23,000 breaths everyday
  • Did you know your foot and your forearm are the same length
  • Did you know you burn more calories sleeping than watching television
  • Did you know 56% of typing is completed by your left hand
  • Did you know human thigh bones are stronger than concrete
  • Did you know more people are allergic to cows milk than any other food
  • Did you know your mouth produces 1 litre of saliva a day
  • Did you know your head contains 22 bones
  • Did you know the coloured part of your eye is called the iris
  • Did you know you breathe 23,000 times a day
  • Did you know if your DNA was stretched out it would reach to the moon 6,000 times
  • Did you know everyone has a unique tongue print
  • Did you know you begin to feel thirsty when your body losses 1% of water
  • Did you know hiccups usually lasts for 5 minutes
  • Did you know not all your taste buds are on our tongue (10% are on the insides of you cheeks)
  • Did you know your most active muscles are in your eye
  • Did you know your liver has over 500 functions
  • Did you know your brain uses 25% of all the oxygen your breathe
  • Did you know horses have 18 more bones than humans
  • Did you know blonde beards grow faster than darker beards
  • Did you know when recognising a persons face you use the right side of your brain
  • Did you know the human body contains 96,000km(59,650miles) of blood vessels
  • Did you know the hydrochloric acid found in your stomach is strong enough to dissolve a nail
  • Did you know on average you blink 25,000 a day
  • Did you know men have 10% more red blood cells than women
  • Did you know you have fewer muscles than a caterpillar
  • Did you know when your face blushes so does your stomach lining
  • Did you know 1 square inch of human skin contains 625 sweat glands
  • Did you know your normal body temperature is 37°C (99°F)
  • Did you know red blood cells are produced in bone marrow
  • Did you know you shed a complete layer of skin every 4 weeks
  • Did you know a Sphygmomanometer measures blood pressure
  • Did you know oxygen, carbon, hydrogen and nitrogen make up 90% of the human body
  • Did you know the fingerprints of koala bear are indistinguishable to that of a human
  • Did you know the average person will consume 100 tons of food and 45,424 liters (12,000 gallons) of water in their lifetime
  • Did you know the longest word that can be typed using only our right hand is 'lollipop'
  • Did you know people who work at night tend to weigh more
  • Did you know wearing headphones for just an hour will increase the bacteria in your ear by 700 times
  • Did you know new born babies have 350 bones (by age 5 the amount of bones merges to 206)
  • Did you know you use 72 different muscles while speaking
  • Did you know the most common disease is tooth decay
  • Did you know the average person goes to the toilet 6 times a day
  • Did you know your foot is the most common body part bitten by insects
  • Did you know the longest time a person has been in a coma is 37 years
  • Did you know your right lung takes in more air than your left
  • Did you know womens hearts beat faster than mens
  • Did you know the average person has 10,000 taste buds
  • Did you know the smallest bone in your body is found in your ear
  • Did you know the ideal temperature to fall asleep is between 18-30°c (64-86°f)
  • Did you know honey enters your blood stream within 20 minutes of being eaten
  • Did you know you brain weights 2% of your body weight though uses 20% of all oxygen you breathe and 15% of the bodys blood supply
  • Did you know each red blood cell lives an average of 4 months and travels between the lungs and other tissue 75,000 times before returning to bone marrow to die
  • Did you know the hardest substance in the human body is enamel
  • Did you know there are over 10 trillion living cells in the human body
  • Did you know the number 1 cause of blindness in the US is diabetes
  • Did you know every year over 98% of atoms in your body are replaced
  • Did you know your blood is 6 times thicker than water
  • Did you know 44% of people have broken a bone
  • Did you know the human eye can detect more shades of green that any other colour
  • Did you know you can't tickle yourself
  • Did you know the average person has over 1,460 dreams a year
  • Did you know a baby fetus develops fingerprints at eighteen weeks
  • Did you know a hippopotamus can run faster than a man
  • Did you know the night vision of tigers is 6 times better than humans
  • Did you know the average person consumes over a ton of food and drink each year
  • Did you know more people are allergic to cows milk than any other food
  • Did you know there are over 100 different viruses that cause the common cold
  • Did you know acorns are poisonous to humans (if eaten it can cause damage to your kidneys)
  • Did you know humans are the only primates that don't have pigment in the palms of their hands
  • Did you know a person will die from total lack of sleep sooner than from starvation (Death can occur about 10 days without sleep while starvation takes a few weeks)
  • Did you know the average human drinks over 60,566 litres (16,000 gallons) of water in a lifetime
  • Did you know an individual blood cell takes about 60 seconds to make a complete circuit of the body
  • Did you know by age 60 most people would have lost half of their taste buds
  • Did you know every square inch of the human body has an average of 32 million bacteria on it
  • Did you know fingernails grow faster than toenails
  • Did you know humans shed and regrow outer skin cells every 27 days (almost 1,000 new skins in a lifetime)
  • Did you know it takes 17 muscles to smile and 43 to frown
  • Did you know the human body has over 600 muscles (40% of the bodys weight)
  • Did you know in 1900 the average life span in the US was 47
  • Did you know DNA stands for Deoxyribonucleicacid
  • Did you know the average person walks the equivalent of twice around the world in a lifetime
  • Did you know laughing lowers levels of stress and strengthens your immune system
  • Did you know once a women reachs the age of 30 they lose 1% of their bone mass every year thereafter (by the time a women is 50 she will have lost 20%)
  • Did you know the surface area of your lungs is roughly the same size as a tennis court
  • Did you know you have over 600 muscles
  • Did you know after you’ve eaten it takes approximately 12 hours for food to entirely digest
  • Did you know the human eye blinks over 4,200,000 times a year
  • Did you know a person produces enough saliva to fill 2 average size swimming pools during their lifetime
  • Did you know the average person sheds .7kg (1.5 pounds) of skin each year
  • Did you know the human body creates 2,500,000 new red blood cells every second
  • Did you know a soap bubble is 10,000 times thinner than the average human hair
  • Did you know an astronaut can be up to 2 inches taller returning from space (the cartilage disks in the spine expand in the absence of gravity)
  • Did you know there are over 97,000 km (60,000 miles) of blood vessels in the average person

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