The last Thursday of each June, Americans celebrate National Handshake Day.
You are supposed to shake the hand of at least one person that you would not have on any other day. And then? YWell, you wish them a good day and... you can stop there or keep on chatting!
The tradition of handshaking is very ancient, as texts and ruins dating back to the archaeological era show that handshaking was already practiced in ancient Greece in the 5th century BC.
