FSM is a non-invasive treatment that uses extremely low amperage currents with specific frequencies to relieve pain and treat various conditions. It works by stimulating tissues with paired frequencies of current, which are so low they are typically unfelt by the patient, though some may experience a warming sensation. It is a reproducible treatment for various somatic and visceral conditions such as frozen shoulder, fibromyalgia, chronic fatigue, and myofascial and neuropathic pain.  Other potential benefits include increasing ATP (cell energy) production and softening tight muscles.