Mudras Work Via Neural Science. The tension applied to the nerve/s or psycho-neural circuits formed by the mudras help in balancing the five basic elements. This redirection of the internal energy effects the changes in veins, tendons, glands and sensory organs, to bring the body back to a healthy state. Keeping specified nerves stretched for specified periods tones up nervous system. The fingers of each hand are held in specific postures, this provides the required tension on nerves.