Abstract: A system for electrically stimulating one or more muscle groups includes a processor-readable storage medium storing, in association with each of at least one muscle group, digital exertion data representative of one or more action potentials captured during an exertion regime from the muscle group of a respective subject; a signal generator for generating electrical stimulation signals; processing structure configured to automatically retrieve digital exertion data from the processor-readable storage medium and to automatically cause the signal generator to generate new electrical stimulation signals based on the digital exertion data; and a signal distributor for conveying the new electrical stimulation signals from the signal generator to one or more respective muscle groups of at least one different subject.