How the handshake became our universal greeting

HostIf you look at old Greek gravestones from about twenty-five hundred years ago, you see something surprisingly familiar. It's not a scene of mourning or people crying. Instead, you see two people standing together, reaching out, and clasping hands. This is one of the oldest records we have of the handshake. In those days, it was called dexiosis, which basically just means giving the right hand.

HostThe researcher who looked into this for us found that back then, it was much more than just a quick way to say hello. It was a way to show that two people were on the same level. Think about it. In many other places at that time, if you met someone powerful like a king or a lord, you had to bow low or even lie face down in the dirt. But the Greeks used the handshake to show that two people were equals.

HostOn those old gravestones, you see the living and the dead holding hands. It was a way to bridge the gap between this world and the next. It showed that the person who died and the person left behind were still tied together by a bond of trust. It wasn't a casual move. It was a visual way to seal a deal or an alliance, showing that both people had the same dignity. It was the start of using a simple hand-clasp as a sign of fairness.

HostBut while the Greeks gave us the grip, the actual shaking motion came a bit later, and it was mostly about staying alive. During the middle ages, you couldn't always be sure that the person you were meeting was a friend. Meeting a stranger on a road was a risky move. So, the handshake turned into a kind of security check.

HostThe move from just holding a hand to a hard up-and-down shake was a smart way to stay safe. That vertical motion was meant to shake loose any hidden blades or daggers that might be tucked up a sleeve. If you grabbed someone by the hand or the forearm and gave it a good, firm tug, a weapon would literally fall to the ground. It was a physical test disguised as a greeting. By shaking firmly, you were both checking each other for surprises. It was a mutual, silent search that made sure neither side was hiding a knife.

HostEven with that history, the handshake didn't become the standard way everyone said hello until much later. For a long time, social life in Europe was all about showing who was better than who. There was a whole system of bowing, curtseying, and tipping hats. Every move you made was meant to show your rank and prove you knew your place in the world.

HostThat changed in the sixteen hundreds and seventeen hundreds because of a group called the Quakers. They used the handshake as a form of social protest. The Quakers believed that since everyone was equal before God, no man should've to bow or scrape to another. They refused to follow the old rules of the ruling class.

HostInstead, they insisted on shaking hands with everyone, whether they were talking to a king or a man who fixed shoes. By doing this, they made the greeting something for everyone. They took a gesture that used to be a niche sign of trust and turned it into a tool for a more equal society. They basically forced the world to be more democratic by changing how we greet the person standing in front of us.

HostSo, we have the history of equality and the safety of the security check. But there's a third reason we still do this today, even though we're not worried about daggers in sleeves. It turns out we're doing something much more primal. In twenty-fifteen, a group of scientists did a study and found that when we shake hands, we're actually sampling each other’s scents.

HostThe researchers watched what people did after they shook hands with a stranger. They noticed that almost everyone significantly increased the time they spent sniffing their own right hand. We do it without thinking. We touch our nose or our face, and in that moment, we're picking up all sorts of chemical data.

HostWe're checking for scent signals called pheromones that tell us about a person’s health, how stressed they're, and even how well our genes might match up. It's a biological data dump that happens in a split second. We think we're just being polite, but our brains are actually busy sniffing out our social environment to see who we can trust.

HostIt's amazing how much is packed into such a short moment. What started as a way for the Greeks to show they were on the same level became a way for medieval travelers to check for knives, and then a way for the Quakers to demand equality. And all the while, our bodies have been using it to silently trade chemical secrets. The next time you reach out to someone, remember that your hand is carrying a history that goes back to those ancient gravestones. You're not just saying hi. You're performing a safety check and a chemical test that has been part of being human for thousands of years.

HostHumans have a deep need to know who's standing in front of them, and for a very long time, the right hand has been the best tool we have to find out.

HostA simple clasp of the hand is still the fastest way to bridge the gap between two strangers.