Humans Interesting Facts

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Humans Interesting Facts

• When filming summer scenes in winter, actors suck on ice cubes just before the camera rolls - it cools their mouths so their breath doesn't condense in the cold air.
• Humans were first infected with the HIV virus in the 1930s.
• Thinking about your muscles can make you stronger.
• If left alone, 70% of birthmarks gradually fade away.
• Grapefruit scent will make middle aged women appear six  years younger to men. The perception is not reciprocal and the grapefruit scent on men has no effect on women's perception.
• Women blink twice as many times as men do.
• Intelligent people have more zinc and copper in their hair.
• We are about 1 cm taller in the morning than in the evening.  Layers of cartilage in the joints gets compressed during the day.
• There are approx. 550 hairs in the eyebrow.
• The strongest muscle in the human body is the tongue.
• The life span of a taste bud is 10 days.
• The world's youngest parents were 8 and 9 and lived in China in 1910.
• The largest known kidney stone weighed 1.36 kilograms.
• Most dust particles in your house are made from dead skin.
• Kidney stones come in any color--from yellow to brown.
• Babies are born without kneecaps. They appear when the child is 2-6 years of age.
• Your body is creating and killing 15 million red blood cells per second!
• The average human produces 10,000 gallons of saliva in a lifetime.
• If you ate too many carrots you would turn orange.
• The force of 1 billion people jumping at the same time is equal to 500 tons of TNT.
• A baby is born every seven seconds.
• You can tell if a skunk is about if you smell only .000000000000071 ounce of its spray.
• You breathe about 10 million times a year.
• The colder the room you sleep in, the better the chances are that you'll have a bad dream.
• The foot is the most common body part bitten by insects.
• The most common time for a wake up call is 7 a.m.
• The typical person goes to the bathroom 6 times a day.
• The fastest growing nail is on the middle finger.
• The most sensitive finger on the human hand is the index finger.
• The human body weighs 40 times more than the brain.
• After eating too much, your hearing is less sharp.
• A person swallows approx. 295 times while eating dinner.
• Your urine will turn bright yellow if you eat too much asparagus.
• There are more people alive today than have ever died.
• The human body is better suited to two four-hour sleep cycles than one eight-hour one.
• A man's beard contains between 7000 and 15,000 hairs.
• A beard grows an average of 140mm a year
• A hair is 70 per cent easier to cut when soaked in warm water for two minutes
• Women's hair is about half the diameter of men's hair
• During an average lifetime, a man will spend 3,350 hours removing 8.4 meters of stubble
• 4.5 million people have their health 'adversely affected' by air pollutants each year.
• 4 million children die each year from inhaling smoke from indoor cooking fires that burn wood and Dung
• 4 million people die annually from diarrhea infections, caused by poor sanitary conditions
• The hardest bone in the human body is the jawbone.