My favorite theory for the purpose of the handshake is that the up and down motion of the arm was supposed to dislodge any hidden weapons such as knives or daggers.
Imagine the response you’d receive in a boardroom today when your Spartan Blades Les Georges V14 Dagger slips out and chips the corner of the new custom walnut conference table.
Not a good first impression!
The Handshake Spectrum
On one end of the spectrum, we have the renowned firm grip.
This is the holy grail of handshakes which exudes confidence and trust.
In the right hands (pun intended) the firm grip is a superpower that will endear you to all who receive it.
How firm should your grip be?
Picture Superman greeting patients at Metropolis city hospital on his annual meet and greet.