ou meet up with someone for a chat or a meal together ...

"You meet up with someone for a chat or a meal together, or to
discuss a possible job: more often than not you start by shaking
hands, and so you create a connection. One hand represents the
masculine, emissive principle and the other, the feminine,
receptive. If you both make this gesture consciously, each hand
plays its part, and the result is an active harmony.
Two people who shake hands show they wish to understand each
other, to agree to walk the same path. Yes, provided that,
symbolically, the energy of one hand is positive, the other
negative. When both hands (that is, both people) are active and
positive, they can only come into conflict. When both hands
(again, both people) are passive, they will do nothing. The act
of shaking hands always implies the wish to bring about ordered
activity - it means 'I want to try having exchanges with you;
let's see if we can work together.' But how many people come
together with no concern about understanding the language of
hands! They should not be surprised if their undertaking ends in
failure."

Omraam Mikhaël Aïvanhov