Fist bumps, waves, and salutes

The peace sign doesn't mean what you think! A guide to hand gestures

Hand gestures are everywhere—so ingrained in our daily lives that we often don’t realize how frequently we communicate through them. Whether expressing emotions, adding context to our words, or simply enhancing spoken communication, gestures are a vital part of our shared culture, passed down through generations for centuries. From ancient Rome to the modern day, here are 12 hand gestures and their fascinating origins explained.

The exact origins of the thumbs-up gesture remain uncertain, but its earliest documented use dates back to Roman gladiators, where a thumbs-up or thumbs-down was believed to signal life or death in the arena. Today, the gesture is nearly universal, thanks to its popularization through media, travel, and even emojis. However, it carries offensive meanings in certain cultures, and for divers, it signifies "ascend," rather than approval—so context matters!

Believe it or not, the V sign originally began as an insulting gesture, though with the back of the hand facing outward. A more positive meaning, however, was popularized during World War II when Winston Churchill used it as a "V for Victory" symbol. The double-entendre of the gesture likely added to its appeal—flipping the hand’s orientation easily turned it into a mocking snub toward the enemy. In the 1960s, the gesture took on new meaning during the counterculture movements, evolving into an enduring symbol of peace.

The wave as a friendly greeting traces back to medieval times when knights raised their visors to show they meant no harm. Its simplicity and universal appeal have made it a common gesture worldwide, transcending language barriers. However, in some countries like Nigeria and South Korea, certain types of waving can still carry offensive connotations.

The handshake might be one of the oldest hand gestures on this list, so it’s hard to be sure of its origins. Yet, there is evidence that it was already in use 3,000 years ago, as a way to seal alliances. In ancient Greece it was called dexiosis, and was practised as early as the 5th century BC. While the gesture is found in many cultures, the specifics as to when and how it should be used vary significantly.

Pointing likely originated as a practical gesture to indicate objects or directions, making it one of humanity's oldest forms of communication. Fascinatingly, it is the first communicative gesture to develop in human infants, and linguists believe it plays a crucial role in language acquisition. However, despite its universal utility, many cultures consider pointing at other people with the index finger to be rude or disrespectful.

The origin of the military salute, like the wave, is disputed. Some historians trace it to the medieval practice of knights raising their helmet’s visor as a gesture of recognition and peaceful intentions. By the 18th century, it had evolved into a formal military custom to signify respect and camaraderie. Today, variations of the salute can be seen across armed forces worldwide, each adapted to reflect the unique traditions and protocols of different nations.

While the phrase "give me five" was already slang for a type of handshake, the high five most likely evolved from the "low five," a gesture rooted in African-American culture since the 1920s. The first documented use of the high five occurred in 1977, credited to Dusty Baker and Glenn Burke of the Los Angeles Dodgers. It quickly became associated with sports, symbolizing shared triumphs and camaraderie.

The fist bump can trace its origins to boxers who were instructed to touch gloves at the start of a contest. However, its popularization is a relatively recent phenomenon, gaining traction in sports and youth culture during the 1990s as a more casual alternative to the handshake. During the COVID-19 pandemic, the fist bump became a common greeting, as shaking hands was discouraged to help slow the spread of the virus.

While the origins of clapping as a form of applause are difficult to pinpoint, it is a common practice in many cultures. One of its earliest documented uses dates back to ancient Roman theater, where audiences clapped or waved pieces of cloth to express approval for performances. The percussive sound of clapping has also found its place in music, particularly in genres like funk, gospel, doo-wop, and flamenco.

The "OK" gesture, made by forming a circle with the thumb and index finger, became popular in 19th-century America as a symbol for "all correct." However, its origins trace back to classical antiquity, where a thumb and forefinger touching was thought to mimic kissing lips, often used as a romantic gesture. It wasn’t until Roman rhetoricians began using it during public speeches that the gesture gained its modern connotation of approval or assent.

The crossed fingers gesture, often used to wish for luck, has its origins in ancient Christianity, where it was likely adopted for its resemblance to the Cross of Christ. Over time, it also became associated with telling lies, especially among children who use it as an excuse for telling a white lie or invalidating a promise.

Though likely as old as human frustration itself, the facepalm gesture became globally famous through internet memes, becoming a shorthand for disappointment or exasperation in both real life and online. Surprisingly, it’s not exclusive to humans—primates have been observed using similar gestures to signal a desire for solitude or to avoid social interaction.

Facts you didn't know you needed

Is the day longer for your pet? Mind-blowing facts you need to know

Adults often assume they already understand the world, but there’s always something new to surprise us! Did you know that clouds actually have weight? Or that the day is longer for some animals? And that’s just the beginning. From hidden functions of your organs to the true color of the universe, today you’ll learn 10 fascinating facts you probably never thought to ask, but will make you sound impressively smart in your next conversation!

Unlike humans, animals don’t experience a shared "present" in quite the same way. Instead, their sense of time is tied to the rhythms of their own bodies. For very small animals with fast metabolisms like parrots, hamsters, or guinea pigs, time actually seems to pass more slowly. In a sense, they live in slow motion because their faster-working nervous systems allow them to process sensory information at a fast speed.

What if someone commits a crime and tries to blame their identical twin? Have you ever wondered about that? It’s a valid question; after all, identical twins not only look alike, they also share the same DNA. But here’s the surprising part: if investigators check fingerprints, the innocent twin could be cleared. That’s because, despite their nearly identical DNA, twins have unique fingerprints, shaped by subtle genetic and environmental factors in the womb.

You’ve probably spent time lying on the grass, watching clouds drift across the sky. They look light, fluffy, almost like cotton candy, and it’s hard to imagine them as heavy objects. But the truth is surprising: clouds are incredibly heavy. An average cumulus cloud can weigh around 1 million pounds! That impressive weight comes from the billions of tiny water droplets suspended in the air. So, how do they float? It’s because each droplet is extremely small and falls very slowly, while rising warm air currents help keep the cloud suspended above us.

Most of us have a rough image of the world map in our minds. But we have something to tell you: most maps aren’t completely accurate. Because the Earth is a sphere, cartographers have to distort some areas to represent it on a flat surface. On Mercator projection maps, countries near the poles appear much larger than they really are, while countries near the equator look smaller in comparison. For example, Alaska looks about the same size as Brazil, but in reality, Brazil is nearly five times larger!

Most people don’t realize that there’s actually a name for the color of the universe. Strange, right? But it’s true! Astronomers who studied the light from thousands of galaxies discovered that if you blend all the colors from the observable universe, the result is a soft, beige-ish white shade, famously named "Cosmic Latte" in 2002.

With 50 states, there’s no shortage of variety in their names. Almost every letter of the English alphabet appears at least once, except for one: Q, which is completely absent. In addition to this, there’s another surprisingly rare letter: J. While it isn’t entirely missing like Q, it only appears in one state, New Jersey.

Although we don’t notice it, indeed, the Earth’s rotation is gradually slowing. This happens because tidal friction, caused by the Moon’s gravitational pull on our oceans, creates a subtle drag on the planet’s spin. As a result, days are getting longer, but very gradually: by only about 1.7 milliseconds per century.

Do you remember your last dream? Whether good or bad, dreams are a constant part of sleep, but not everyone experiences them in the same way. Deaf people who use sign language in their daily lives often communicate through signs in their dreams, too. Meanwhile, blind people tend to have dreams rich in sounds, smells, and tactile sensations, using these other senses to experience the dream world.

We’re used to seeing hippos covered in mud, splashing in water, or barely peeking above the surface. But here’s a surprise: hippos can’t actually swim! That’s right. Because of their huge, heavy bodies, they don’t float or paddle like most animals. Instead, they walk or run along the riverbed.

Can your brain really "eat" itself? Well, close, but not exactly. There’s a process called phagocytosis, carried out by specialized immune cells in the brain known as microglia. These cells engulf and remove debris, dead cells, and other unwanted material. But don’t worry; it’s safe! The mechanisms exist to protect, repair, and maintain your brain.