People shake hands for a few reasons:

Greeting: It's a common way to say hello, particularly upon meeting someone new.

Building rapport: The handshake can create a sense of trust and connection between two people.

Showing respect: It's a way to acknowledge the other person and show them that you consider them an equal.

Sealing deals: In some cultures, a handshake can signify the closing of an agreement.

The exact origins of the handshake are a little fuzzy, but some theories suggest it started as a way to show you weren't holding a weapon [ ιστορία της χειραψίας (Greek) ON history.com].

In recent years, with concerns about germs, the handshake has become a little less common. But it's still a widely used gesture in many parts of the world.

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