The real origin of the handshake

Why do we shake hands with people? Well today on MSM front page ever day mysteries wrote today that the origin of the handshake ,"...lies in medieval history. By offering a right hand to a stranger, a hand that could otherwise be used to draw a sword, men were overtly displaying their intentions of peace toward one another. " But that is not accurate.The real origin of the handshake started not in medieval times but in Roman times. Romans clasped arms to show I hold not weapon. It was the medieval nights who made the shift from arm clasping to hand clasping and later to the shaking, but the shaking part of the handshake originated because of a trick of some medieval nights of hiding weapons up in their sleeve. So when Knights went to grab hands they started shaking the other guys hands so if there where any hidden weapons hidden in the sleeves of their potential opponent they would fall out during the "shake down.
At that point handshakes became weapons checks.

Nowadays, from signing a treaty to settling a bet with friends, "shaking on it" remains a symbolic sign of agreement.
For more about the handshake check out my book on my website.