Each device, depending on the brand and its age, will have different programs focused on different objectives. It would be nice if we acquired one focused on what we know we are going to work more, since many models tend to be focused with a variety of programs broader to a profile of users (fitness, rehabilitation, massage, running, etc.). Anyway we can say that the basic programs that usually have are the following: Toning : Increased tonicity and muscle definition. Hypertrophy: Increased muscle volume and fiber size. Aerobic : Increases the resistance and oxygen consumption of muscle fibers. http://www.realsupplementadvisor.com/alpha-monster-ed/