Have you ever wondered how different we are? Have you ever noticed that some simple and harmless things we do can be unacceptable for people from other cultures?
That means the body speaks a lot, but what it says depends on the culture you're in. That is why people must be very careful with body language
because even such a simple thing as a handshake or greetings can lead to misunderstanding and confusion like in the picture: Why didn't he shake my hand? What now?2 etc.