@Banging your head against a wall for one hour burns 150 calories.

Alternatively, you can walk your dog for 45 minutes, which also burns 150 calories – and is much less painful.

You can also check out these other weird ways to burn calories.

@In Switzerland it is illegal to own just one guinea pig.

This is because guinea pigs are social animals, and they are considered victims of abuse if they are alone.

Why isn’t this a law everywhere?!

@Pteronophobia is the fear of being tickled by feathers.

It’s also a fear of feathers themselves. The word “ptero” is the Greek word for feather, and “phobia” is also Greek, meaning fear.

@Snakes can help predict earthquakes.

They can sense a coming earthquake from 75 miles away (121 km), up to five days before it happens.

Why not check out these other fun facts about snakes.

@Crows can hold grudges against specific individual people.

Crows can very easily distinguish humans apart from each other, whereas humans find it nearly impossible to tell crows apart.

Fun Fact: This is known as The Crow Paradox.

@The oldest “your mom” joke was discovered on a 3,500 year old Babylonian tablet.

It was discovered in Iraq in 1976, however since then the tablet has been lost, but the text remains preserved.

@So far, two diseases have successfully been eradicated: smallpox and rinderpest.

The last naturally occurring case of smallpox was diagnosed in October 1977, and the last case of rinderpest was diagnosed in 2001.

@29^th May is officially “Put a Pillow on Your Fridge Day”.

This strange holiday spans back to the early 1900’s, where families would place a piece of cloth in their larders.

It’s celebrated in Europe and the U.S.A to bring luck & wealth to the household.

Read more about Put a Pillow on Your Fridge Day right here!

@Cherophobia is an irrational fear of fun or happiness.

That’s one phobia I wouldn’t like to have… it would probably mean they would fear these fun facts!

@7% of American adults believe that chocolate milk comes from brown cows.

I know 7% doesn’t sound like a lot, but that actually works out at 16.4 million American adults.

Sounds like a lot now right?

@If you lift a kangaroo’s tail off the ground it can’t hop.

Kangaroos use their tails for balance whilst hopping, so if you elevate their tail, they would have no balance and fall over.

Don’t miss these other fun facts about kangaroos.

@Bananas are curved because they grow towards the sun.

Bananas go through a process called “negative geotropism.” Instead of growing towards the ground, they start growing towards the sun.

The fruit grows against gravity, which gives the banana its familiar curved shape.

Love bananas? You’ll go bananas over these fun facts about bananas!

@Most Korean people don’t have armpit odor.

Only 0.006% of the Korean population have the ABCC11 gene, which is the cause of armpit odor.

As a result deodorants are rarely sold in Korea.

@The original London Bridge is now in Arizona.

It was taken apart in 1963 and shipped overseas before being reassembled piece by piece.

This was to help bring people to the new, developing town.

@During your lifetime, you will produce enough saliva to fill two swimming pools.

An average human produces between 1 to 2 liters of saliva each day, which is a maximum of 730 liters per year.

The average life expectancy is just over 70 years, which gives a maximum of 51,100 liters of saliva produced in an average lifetime.

This is more than enough to fill two swimming pools.

@If Pinocchio says “My Nose Will Grow Now”, it would cause a paradox.

This is known as Pinocchio’s Paradox.

If you think about it, Pinocchio’s nose would have to grow to make his statement not a lie, but then it can’t grow otherwise the statement would not be a lie.

@Polar bears could eat as many as 86 penguins in a single sitting…

…If they didn’t live at opposite ends of the earth! Polar bears live in the arctic, whereas penguins usually live in Antarctica.

@Car manufacturer Volkswagen makes sausages.

Not only that, they make more revenue from their sausage sales than they do from their car sales!

@Movie trailers were originally shown after the movie, which is why they were called “trailers”.

The problem with the trailers showing after the film was that audience wouldn’t stay around to watch them, making the trailers rather ineffective.

@An eagle can hunt down a young deer and fly away with it.

Never underestimate an eagle!

@The smallest bone in your body is in your ear.

The stapes is a bone in the middle ear of humans that which helps conduct sound vibrations for identification.

It is only roughly 0.04 inch (1mm) in size.

@Tennis players are not allowed to swear when they are playing in Wimbledon.

Because of this, line judges have to learn curse words in every language so they know when a player has violated the rules.

@Only 5% of the ocean has been explored.

Alongside this only 1% of the seabed has been discovered and explored.

Sea exploration and mapping didn’t truly start until the 1960s due to the lack of technology beforehand.

@The top six foods that make your fart are beans, corn, bell peppers, cauliflower, cabbage and milk.

It’s probably best if you avoid eating any of these if you’re going on a date!

You’ll probably like to know some fun facts about these foods that make you poo.

@There is a species of spider called the Hobo Spider.

Most bites from the Hobo Spider (Tegenaria agrestis) happen when the spider is accidentally crushed or squeezed by a human.

2A lion’s roar can be heard from 5 miles away.

To be more specific, a lion can roar as loud as 114 decibels, which is roughly 25 times louder than a gas-powered lawnmower.

If you like this fun fact, check out our clothing over at The Fact Shop – A Lion’s Roar Can Be Heard From 5 Miles Away T-Shirt

@Saint Lucia is the only country in the world named after a woman.

Saint Lucia was discovered by the French after they were shipwrecked on the island.

They arrived on December 13^th which is the feast day of Saint Lucy – hence, why they named it Saint Lucia!

If you’re planning a vacation, why not check out these random fun facts about Saint Lucia!

@A baby spider is called a spiderling.

Spiders aren’t cute, but this name kind of is! Spiderling is the official name for immature spiders.

On top of that, spiderlings are often born in groups of thousands!

Check out these eight creepy facts about spiders.

@The United States Navy has started using Xbox controllers for their periscopes.

You read that right – because the control stick for periscopes is so complicated, using Xbox controllers reduces the learning time from hours to minutes.

@The following can be read forward and backwards: Do geese see God?

This sentence is what is called a “palindrome.”

The word itself is from the Greek “palin” meaning “back,” and “dromos” meaning “direction.