A telltale clue to anxiety or stress is when the hands begin to shake. The hands will shake due to a surge of adrenaline as they are normally used for fine motor control. Hands can shake from nervousness or excitement. Any stimulus, good or bad, can stimulating the muscles in the hands to fire out of control creating quivering. The limbic mind driven by fight or flight response is what causes hand shaking. This makes shaking hands a particularly honest and predictive type of non verbal communication.
To disguise hand shaking, some people will grasp at objects such as drinking glasses, will clasp their hands together, or occupy them with “busy work.” Other times people will steady their uneasy hands by grabbing the hand of a relative, cupped them hand-in-hand at the chest, thrust them underneath the armpits or in pockets, or even sit on them! People who suffer from pronounced handshaking will develop elaborate ritualized gestures to keep their hands from being noticed. They will play with the arms of eye glasses, twirl pencils, or fidget with clothing. To others it will go unnoticed because they will appear as a normal part of their repertoire – their baseline. An attuned body language reader will see them for their true meaning.