The living machine

Apart from your fingers, which part of your body also has a unique print?

Image: MART PRODUCTION

The human body is an incredibly sophisticated machine, full of mysteries. Throughout history, science has revealed fascinating facts about how it works, yet lesser-known curiosities continue to surprise and challenge our understanding. Are you ready to discover 12 fascinating quirks about your body that will leave you speechless?

Image: Aakash Dhage

A person inhales and exhales over 2,000 gallons of air daily, taking roughly 21,000 breaths a day. We perform this action almost unconsciously, but it is vital to absorb oxygen and expel carbon dioxide.

Now, did you know the right lung is slightly larger than the left lung to make room for the heart? And that the lungs contain over 300 billion tiny blood vessels called capillaries that, if unfolded, would extend to 1,500 miles? Don't worry, you learn something new every day!

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The primary function of nails is to protect the fingertips, which contain a high concentration of nerve endings. In fact, this is one of the most sensitive areas of the human body.

Because they are more exposed, fingernails grow at a much faster rate than toenails. Fingernails grow about 1/8 inch per month, while toenails grow about half as much. Nail growth is also determined by factors such as weather, often speeding up during the summer. If you happen to lose a fingernail, it may take up to six months to grow back from base to tip.

Image: Aakash Dhage

The stomach is a fascinating organ with many peculiarities. For example, it produces hormones that influence appetite and sleep, and it can stretch to hold up to 50 ounces of food when we eat.

But perhaps its most incredible feature is its production of hydrochloric acid, which kills bacteria and aids digestion. This acid is so potent that it can even dissolve metals such as zinc. Fortunately for us, the stomach has a protective layer of mucus that is renewed every three to four days. If this lining weren’t continually replaced, it would dissolve. In other words, your stomach would digest itself.

Image: Surja Sen Das Raj

Your thigh bone, or femur, is the largest bone in your body, accounting for about a quarter of your total height. But did you know that human height can vary throughout the day and with age?

Every morning when you wake up, you are about 0.5 to 0.75 inches taller than when you go to bed at night. This is because the soft cartilage between your bones gets compressed by the force of gravity when you stand or sit. Starting in your forties or fifties, people gradually lose nearly half an inch of height per decade due to bone density loss, disc compression, and other age-related factors.

Image: Leighann Blackwood

On an average adult, skin covers an area of about 20 square feet and has multiple functions. The outer layer, called the epidermis, consists of dead cells that help regulate temperature and protect the body from dirt and germs. But did you know that your body is constantly losing and replacing these cells?

Every minute, you shed more than 30,000 dead skin cells. In fact, the entire surface of your skin is replaced every month, which, in other words, means that you will lose around 40 pounds of skin and have around 1,000 different skins in your lifetime.

Image: Nino Liverani

We all remember what we learned in school: the human body has 206 bones. However, at birth, humans have approximately 300 bones, many of which fuse as we grow, resulting in the 206 bones found in adults. More than half of these bones are located in the hands and feet, with 27 bones per hand and 26 per foot.

Another interesting fact about human bones is that they are as strong as granite. A small piece of bone can support up to 9 tons of weight!

Image: Vitalii Khodzinskyi

The eye is one of the most complex and fascinating organs of the human body. It can distinguish up to 10 million colors and adapts so quickly that it can adjust to extreme light conditions within seconds. Plus, your eyelids blink 15 to 20 times per minute, equivalent to roughly 10% of the time you spend awake!

If you have blue eyes, you are among the 8 to 10% of the world's population. Blue eyes result from a mutation that reduces pigment in the iris. Researchers believe this mutation first appeared in a person living in Europe 6,000 to 10,000 years ago, which means that all blue-eyed people living today share a common ancestor.

Image: Tony Litvyak

The human body needs food and water to survive. In fact, water makes up approximately 50% to 70% of body weight, depending on age, sex, and body composition. While the body can survive up to seven days without food, it can only last about two days without water.

Have you ever wondered how much food and drink we consume? Here's the answer: The average person eats roughly 55 tons of food and drinks about 11,000 gallons of liquid during a lifetime.

Image: Liana S

We know that factors such as age, diet, physical activity, illness, and the time of day can influence temperature. In fact, body temperature tends to be lower in the morning and higher in the evening.

But here's the most surprising fact about body temperature: in just 30 minutes, the human body produces enough heat to boil half a gallon of water. Now that’s a figure you probably didn’t expect!

Image: leyre del rio

For its size and composition, the tongue is the strongest and most flexible muscle in the human body. It is covered with roughly 10,000 taste buds, each containing up to 100 cells that help you detect flavors ranging from sweet to spicy. As you age, some taste buds die and are not replaced, which is why younger people often have a more sensitive sense of taste than older individuals.

But here's a fact that will blow your mind: your tongue print is as unique as your fingerprints. From the impression of a tongue, it is possible to identify a human being with similar accuracy as with fingerprints or the iris of the eyes. Luckily, it’s not a technique commonly used by forensic police!

Image: Elīna Arāja

Did you know that the human body contains about 60,000 miles of blood vessels, enough to circle the Earth two and a half times? Additionally, an average adult has roughly 1.2 to 1.5 gallons of blood circulating through the body. So why do veins look blue?

If you look at your wrists, you can probably see blue veins under your skin. It may sound strange, but the reason for this is to do with the way your skin absorbs light and reflects it back to your eye. So, now you know, nobody has blue blood, not even royalty!

Image: Franco Antonio Giovanella

Your inner ear contains fluid that helps send information about balance and movement to your brain. This fluid is also the reason you sometimes get motion sickness. When you look out of a car window, your eyes signal to your brain that your body is moving, but because you are actually sitting still, your brain becomes confused, which can make you feel queasy.

Earwax is produced by your body to protect your ear canal from dirt, insects, and bacteria. Although we commonly call it "wax," it is actually a substance largely composed of dead skin cells and other secretions. By the time it reaches the outer ear, earwax has been inside your ear for about a month!

IDIOM ADVENTURES

8 Idioms And Expressions That Will Leave You Speechless

Image: Pieter Brueghel the Elder, Public domain, via Wikimedia Commons

While some idioms are as familiar as old friends, others lurk in the linguistic shadows, waiting for their moment in the spotlight. These idioms might be rare guests in our everyday repertoire. Still, their colorful histories and unique imagery serve as potent reminders that the challenges people encounter today often echo those faced centuries ago. In this exploration, we unveil eight rare gems that may raise eyebrows, tickle your fancy, and perhaps even inspire you enough to include them in your next conversation.

Image: Jon Toney

Meaning: To make something difficult.

This idiom takes us back to the days when wagon wheels had wooden spokes. Inserting a spoke would jam the wheel, causing chaos for the unsuspecting traveler. Unfortunately, you can still experience the same thing with a bicycle (don’t try it!).

Today, using this phrase signifies throwing a wrench into someone's plans, causing an unexpected obstacle.

Image: James Lee

Meaning: To do whatever it takes to achieve something.

Hailing from Scotland, this idiom refers to the ancient practice of fashioning spoons out of cattle or sheep horns. It means that you are so determined to accomplish your objectives that unwittingly ruining something in the process—or even failing completely—is part of the cost you are willing to pay. You might want to question, though, if you really need that spoon so badly.

Image: Aziz Acharki

Meaning: To be two-faced or deceiving.

This expression is actually one of the many represented in the famous painting Netherlandish Proverbs by Pieter Bruegel the Elder (pictured at the beginning of this article). Among the many curious characters that inhabit the oil painting, a keen eye can spot a lady carrying a bucket of water in one hand and a hot ember on the end of a metal tong in the other.

Image: Michal Bar Haim

Meaning: To be born out of wedlock.

In the olden days, a child born out of wedlock was deemed quite scandalous, as bearing children outside the institution of marriage was considered illegitimate. Many parents would have terrible headaches just thinking about the possibility of their children engaging in this kind of behavior. As a curiosity, the word wedlock is a thirteenth-century way to say "marriage," from the Old English root word wedlac or "marriage vow."

Image: Seriously Low Carb

Meaning: To know how to better benefit yourself.

This idiom has roots tracing back to the mid-1500s. Its essence lies in the wisdom of discerning one's best interests—recognizing where to channel efforts for personal gain, understanding advantageous choices, and identifying those who can be of help. The metaphor refers to the notion that the buttered side of the bread is undoubtedly the best part of it (even in an allegorical bread, apparently), and that identifying the most advantageous aspects of a situation is much like savoring the richness of the buttered side in the realm of life's choices.

Image: Mario Heller

Meaning: To submit passively to a reprimand or punishment.

An old English proverb, this one refers to the act of yielding without resistance, tamely surrendering to someone else, or a difficult situation, as if you were bowing your head to be washed. It sometimes appears in literature as "to put one’s beard to the washing," but the meaning is unchanged.

Image: Cody Wingfield

Meaning: To force yourself to do something unpleasant.

Biting the bullet is a metaphor used to depict a situation where an unavoidable impending hardship is acknowledged, and a decision is made to staunchly endure the associated pain. This metaphor draws its inspiration from the practice of providing soldiers with an object to clench in their teeth before a painful surgical procedure on the battlefield. This phrase was first recorded by Rudyard Kipling as "bite on the bullet," in his 1891 novel The Light that Failed.

Image: Markus Spiske

Meaning: To make peace.

To bury the hatchet means to end all hostilities. The expression originated in the symbolic—and sometimes literal—practice of burying or caching weapons in times of peace among Native Americans. The custom is notably associated with the formation of the Iroquois Confederacy and was prevalent in Iroquois traditions.