30 Knowledge Facts

  • The only part of the body that has no blood supply is the cornea of the eye. It receives oxygen directly from the air.
  • The human brain has a memory capacity which is equivalent of more than four terabytes on hard drive.
  • About 20- 40% of  Indians are vegetarian making it the largest vegetarian – friendly country in the world.
  • The total length of all the blood vessels in the human body is about 100,000 km.
  • Only 7% of people are left-handed.
  • The fragrance of apples and bananas can help a person to lose weight..
  • The total weight of the bacteria in the human body is 2 kg.
  • Women blink about two times less often than men.
  • People with blue eyes are more sensitive to pain than others.
  • 100,000 chemical reactions occur in the human brain every second.
  • In the morning, a person is about 8 millimetres taller than in the evening
  • Your right lung can take in more air than your left.
  • During a person’s lifetime, the small intestine is about 2.5 meters. After they die, the muscles in the walls of their intestine relax, and it’s length increases to 6 meters.
  • The strongest muscle in the human body is the tongue.
  • The surface area of the human lungs is approximately equal to the area of a tennis court.
  • A person who smokes a pack of cigarettes a day is doing the equivalent of drinking half a cup of tar a y
  • Human skin is completely replaced about 1,000 times during a person’s lifetime.
  • If allowed to grow for their whole lifetime, the length of someone’s hair would be about 725 kilometres.
  • During their lifetime, a person will on average accidentally swallow eight small spiders.
  • Teeth are the only part of the human body which cannot heal themselves.
  • Not only human beings, but also koalas have unique finger print.
  • Earwax production is necessary for good ear health.
  • Your nose can remember 50,000 different scents.
  • Everyone has a completely unique smell (except for twins).
  • Babies start dreaming even before they’re born
  • Enamel, found on our teeth, is the hardest substance in the human body.
  • 80% of the brain is water.
  • The brain continues to send out electric wave signals until approximately 37 hours after death.
  • Human bone is as strong as steel but 50 times lighter.
  • One person in 20 has an extra rib, and they are most often men.