EMG foot massagers use electrical stimulation technology to provide relief from foot pain, muscle tension, and stress. Recommended usage times vary from 10-30 minutes depending on individual needs. Safety guidelines include starting with shorter sessions, listening to body signals, and consulting a medical professional for underlying health conditions. The devices can be used to target specific muscle groups and intensities, and can be combined with relaxation techniques such as deep breathing or meditation. Regular maintenance is also necessary to ensure optimal performance.