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The cornea is the only part of the body with no blood supply; it gets oxygen directly through the air.

Suppressing a sneeze can cause a blood vessel rupture in the brain. Don’t suppress a sneeze!

Human skin is constantly regenerating and completely replaces itself approximately every 27 days.

Possums have one of the shortest pregnancies at 16 days. The shortest human pregnancy to produce a healthy baby was 22 weeks, 6 days -- the baby was the length of a ballpoint pen.

Due to paralytics administered, if you wake up during surgery, you probably wouldn’t be able to tell anyone.

There exists a plankton, Dinoflagellates, which, if consumed, reverses your feeling of hot and cold – as well as hallucinations. Symptoms can last from weeks to years.

The liver is the only organ that can fully regenerate from just 25% of its tissue.

The human body contains more bacteria cells than human cells, with the gut alone hosting trillions of microbes.

The strongest muscle in the body, based on its size, is the masseter, or the jaw muscle.

60% of human brain cells are made up of fat.

Babies are born with 300 bones, but by adulthood, we have only 206, as bones fuse together.

A human being sheds 40 pounds of skin in their lifetime. The skin on the outer surface is replaced every month.

The human heart is powerful, capable of pumping about 2,000 gallons of blood every day.

In 1980, a Las Vegas hospital suspended workers for betting on when patients would die.

Cucumber can actually cure bad breath. A slice pressed to the roof of your mouth for 30 seconds with your tongue allows the phytochemicals to kill the problematic bacteria.

If eaten in one meal, 30 to 90 grams of polar bear liver is enough to kill a human being.

The highest recorded fall without a parachute happened in 1972 at 33,333 ft. The victim, Vesna Vulović, was in the hospital for 16 months after the fall.

Your brain uses 20% of the oxygen that enters your bloodstream.

There are more cells of bacteria in your body than there are human cells.

The enamel on the top surface of your tooth is the hardest part of your entire body.

On average, a woman’s heart beats faster than that of a man’s.

People who eat breakfast feel better both mentally and physically throughout the day.

The human body can survive longer without food than sleep. While a person might live for weeks without food, the lack of sleep for 11 days can be lethal.

Videogames have been found to be more effective at battling depression than therapy.

Sneeze or cough? Do you know which one of them is the fastest of all? The answer is sneezes! They can travel at the highest speed of 167 km/h.

Each person has a unique tongue print, just like fingerprints.

Around 70% of the immune system is housed in the gut.

Spending just a few months in Antarctica can shrink your brain.

A baby is born with around 300 bones. By the time they are an adult that number is closer to 200.

Wearing headphones for just an hour will increase the bacteria in your ear by 700 times.

Standard activity can assist with decreasing the gamble of persistent sicknesses like coronary illness and diabetes.

The human brain has a memory capacity equivalent to more than four terabytes on a hard drive.

Sneezes regularly exceed 100 mph, while coughs clock in at about 60 mph.

A certain type of box jellyfish’s venom will make you feel a strong sense of anxiety and sense of impending doom, and possibly thoughts of suicide. These symptoms can last up to two weeks.

Taste buds have a lifespan of about 10 days.

Your stomach gets a new lining every three to four days to prevent it from digesting itself.

Kanye West’s song “Hey Mama” was dedicated to his mother, who died in 2007 after complications with plastic surgery.

Environmental change is supposed to cause an expansion in the commonness of irresistible sicknesses like jungle fever and dengue fever. Get more info about Solar System Project Ideas.

Chewing gum boosts mental proficiency and is considered a better test aid than caffeine – but nobody knows why.

Your sense of smell also goes to sleep when you do, which means you will not be able to smell when you snooze.

The human body has enough iron in it to make a metal nail 3 inches long.

Blood vessels, if laid end to end, would circle the Earth multiple times. The adult human body has about 60,000 miles of blood vessels.

While an adult human has 206 bones, a baby has 300 of them.

It was Nicholas Cage who first advised Johnny Depp to pursue a career in acting during the mid-1980s.

This one of the lazybones! On average, humans sleep for about 25 years of their lives!

The most well-known reason for death on the planet is cardiovascular illness.

Our bodies are made up of two to nine pounds of bacteria.

A healthy (non-colorblind) human eye can distinguish between 500 shades of gray.

Walking can improve brain health. It increases blood flow and the size of the hippocampus.

Comedian Mitch Hedberg never passed on a job, having been told “no” so often early in his career that he felt like if he didn’t say “yes,” he might not be given the opportunity to perform again.

Ketchup was sold in the 1830s as medicine.

Humans are the only species known to blush.

There’s a reply to the saying “Liar, liar, pants on fire” – It’s “I don’t care, I don’t care, I can buy another pair”.

Yawning helps cool the brain, a process thought to be triggered by crowded environments, a rise in temperature, or the need to remain alert.

While filming Rocky IV, Lundgren hit Sylvester Stallone for real, and he ended up in the hospital for nine days.

Human bones are incredibly strong, ounce for ounce stronger than steel.

Jimmy Carter was the first U.S. President to be born in a hospital.

Your teeny tiny human nose is capable of detecting about a trillion smells.

Octopuses have three hearts. Two pump blood to the gills, and one pumps it to the rest of the body.

Known as the Pinnochio effect, your nose actually turns a bit warm every time you tell a lie.

Laughing is good for the heart and can increase blood flow by 20%.

It is humanly impossible to sneeze and keep your eyes open at the same time!

Fingernails grow faster on the hand you write with and on the dominant hand of males.

Virtually the strength of human teeth equals that of a shark!

The human nose can detect about 1 trillion smells.

Your body produces enough heat in only 30 minutes to boil a half-gallon of water.

Just like your fingerprint, your tongue has a unique print too.

An orgasm can clear your sinuses.

You can’t hold your nose and hum. Just try it.

Cold showers have more health benefits than hot or warm showers. These include improving circulation, stimulating weight loss, and easing depression.

Chronic sleep deprivation can affect the brain in a similar way to being intoxicated.

Shaking ketchup makes it 1,000 times thinner.

Every newborn is color blind. They develop the ability to see colours at 5 months of age.

The human eye can distinguish about 10 million different colors.

Your sweat doesn’t smell. It’s the bacteria on your skin that breaks down sweat that causes a bad odor.

40% of all people who come to a party in your home snoop in your medicine cabinet

Wearing headphones for just an hour will increase the bacteria in your ear by 700 times.

The average person produces about 25,000 quarts of saliva in a lifetime, enough to fill two swimming pools.

All people with blue eyes share a common ancestor from around 6,000 to 10,000 years ago.

If you keep smelling something that is not really there, you may be experiencing the earliest symptoms of schizophrenia.

And it is also impossible to lick your elbows. Go ahead and give it a shot!

Every day, a human can lose anywhere between 50 to 100 strands of the hair on their head.