A system to reduce device therapy pain comprising: a pulse generator including controller circuitry programmed to recognize a need for shock therapy and to deliver shock therapy to a heart via at least one first electrode located inside the heart when recognizing such a need, the shock therapy including a defibrillation shock or a cardioversion shock; and at least one second electrode distinct from the at least one first electrode and operatively coupled to the pulse generator, wherein, in response to a need for shock therapy, the pulse generator is adapted to deliver a plurality of pre-therapy conditioning electrical pulses via the at least one second electrode so as to cause at least a partial contraction of a chest musculature, and wherein the pulse generator is configured to apply the pre-therapy conditioning electrical pulses from a time prior to delivery of the shock therapy at least until the pulse generator delivers the shock therapy, wherein the pre-therapy conditioning electrical pulses are directed at one or more somatic nerves such that the one or more somatic nerves causes a fused tetanus condition of the chest musculature, wherein the pulse generator is adapted to deliver the pre-therapy conditioning electrical pulses recurrently at a frequency of 10 Hz to 100 Hz until the shock therapy is applied. a pulse generator including controller circuitry programmed to recognize a need for shock therapy and to deliver shock therapy to a heart via at least one first electrode located inside the heart when recognizing such a need, the shock therapy including a defibrillation shock or a cardioversion shock; and at least one second electrode distinct from the at least one first electrode and operatively coupled to the pulse generator, wherein, in response to a need for shock therapy, the pulse generator is adapted to deliver a plurality of pre-therapy conditioning electrical pulses via the at least one second electrode so as to cause at least a partial contraction of a chest musculature, and wherein the pulse generator is configured to apply the pre-therapy conditioning electrical pulses from a time prior to delivery of the shock therapy at least until the pulse generator delivers the shock therapy, wherein the pre-therapy conditioning electrical pulses are directed at one or more somatic nerves such that the one or more somatic nerves causes a fused tetanus condition of the chest musculature, wherein the pulse generator is adapted to deliver the pre-therapy conditioning electrical pulses recurrently at a frequency of 10 Hz to 100 Hz until the shock therapy is applied. wherein, in response to a need for shock therapy, the pulse generator is adapted to deliver a plurality of pre-therapy conditioning electrical pulses via the at least one second electrode so as to cause at least a partial contraction of a chest musculature, and wherein the pulse generator is configured to apply the pre-therapy conditioning electrical pulses from a time prior to delivery of the shock therapy at least until the pulse generator delivers the shock therapy, wherein the pre-therapy conditioning electrical pulses are directed at one or more somatic nerves such that the one or more somatic nerves causes a fused tetanus condition of the chest musculature, wherein the pulse generator is adapted to deliver the pre-therapy conditioning electrical pulses recurrently at a frequency of 10 Hz to 100 Hz until the shock therapy is applied.