Neural evidence for action related somatosensory predictions Chanting OM while in Gyan mudra (thumb and index finger touching)combines sound vibration with a" seal of knowledge" to enhance mental clarity , deepens concentration ,and reduce stress. Benefits Mental clarity and ToolBox Talk #42: HAND ARM VIBRATION SYNDROME (HAVS) As the majority of our operations involves working with our hands in some capacity whether it is hitting a hammer, using power tools, Transmissibility of mechanical vibration from the fingertip to phalanxes ScienceDirect