- Lungs consists of 300,000 million capillaries with tiny blood vessels. It they were laid out, it would span 1500 miles
- Human bone is 4 times stronger than concrete. A cubic inch of bone can bear a load of 19,000 lbs.
- The largest organ in human body is the skin. A single person will shred off nearly 40 lbs of skin in his lifetime.
- The digestive acid produce in stomach is strong enough to melt zinc. This is why our stomach renew its lining itself so that the acid won't melt the stomach.
- The human body gives off enough heat to boil half gallon of water in just half an hour.
- Circumcised foreskin takes only 21 days to grow. The lab-grown skin are used to treat burnt patients.
- When you blush, your stomach linings also turns red.
- The human feet consists of 500,000 sweat glands.
- Nose is similar to brain memory, it can remember about 50,000 different scents.
- Everyone has unique smell, unique finger print and unique tongue print.
- The colder the room you sleep in, the higher the chances of getting nightmares.
- We are about 1 cm taller in the morning than in evening, because throughout day gravity pulls the body towards it, so the body will become smaller.
- Human are only species that produces emotional tears
- Everyone has one strong eye and one weak eye.
- Human skeleton gets renewed itself after 10 years.
- If the hair is remain uncut, then it can grow up to 5 ft.
- The tongue and the jaws muscle are among the strongest muscle in the human body.
- It is impossible to sneeze with your eyes open
- Our mouth uses 75 muscle when we speak.
- The thigh muscle is stronger than concrete.s
- The only part where there is no blood circulation in the body is the Cornea in the eye. It gets oxygen directly from the air.
- Like snakes, human also shed skin, but it takes 27 days to completely shed and get new skin.
- The hardest bone in human body is the Jaw bone.
- If the saliva cannot dissolve and mix with the food, you cannot find the taste in your food.
- Men have approximately 6.8 liters of blood, while women have 5 liters of blood in their body.
- Women blink twice as many times than men.
- Finger nail grows faster than toe nails.The nail in the middle finger grows faster than any other finger nails.
- The brain is more active at night than during day.
- The largest cell in human body is female eggs, while the smallest is male sperm.
- Women heart beats faster than men.
- A sneeze travels at a rate of 100 miles per hours.
- The brain is filled with 80% of water.
- A average person have at-least 7 dreams a night. Yet when we wake up, between 10 seconds, we forget half of it.
- The smallest bone in the body is in the ear.
- Half of the body's red cell is replaced after every 7 days.
- The small intestine is 6 meters long.
- The strongest bone in the body is Femur ( the thigh bone) and its hallow.
- The width of the human arm-span is total length of the body.
- We see our nose every time, but the brain somehow ignores it.
- The eye ball weight approximately 28 grams.
- The tongue has 3,000 taste-buds.
- Even though brain process the pain signal, the brain itself actually does not feel the pain.
- It takes only 7 seconds for a food to reach to the stomach from mouth.
- The capacity of human bladder is approximately 400 ml to 600 ml differing from person-to-person, but the urge to urinate is triggered only when the bladder is filled with 100 ml to 200 ml.of urine.
- The sound that we hear when cracking our knuckle is the sound of bursting bubbles of nitrogen gas.
- It takes about 20 second for a red blood cell to travel the entire body.
- Almost half of the human bones are in hand and the feet.
- A normal human being can survive 20 days without eating but it cannot survive more than 2 days without drinking.
- There are 14 bones in the human face.
- The space between the eyebrows is call " Glabella ".
- "Borborygmi" is the noise that the stomach makes when we are hungry.
- Compared with a camera, if the human eye was a digital camera, it would have 576 Megapixels.
- Our Fingers don't have any muscle, finger joints are moved by the muscle present in the palm and in the forearm.
- Babies are born with 300 bones, by adulthood the number is decreased to 206 bones.
- Humans can live more without food than without sleep, the longest recorded time that anyone has lived without sleep is 11 days.
- Nails and hairs do not continue to grow after we die.
- Babies are always born with blue eyes.
- The surface area of human lungs is equal to size of tennis court.