ZMA stands for zinc monomethionine aspartate and is a supplement used by body builders and serious athletes to boost testosterone and IGF-1 in the body. ZMA combines zinc, magnesium, and vitamin B6, all three of which play an important role in the metabolic process. Additionally, most people do not get enough magnesium in a typical diet. Studies have shown ZMA supplements can lead to heightened muscle mass build up, elevated muscle strength, and increased anabolic hormone levels. ZMA supplements are also useful to athletes, as vitamins and minerals such as zinc and vitamin B6 are depleted while exercising. In addition to higher free testosterone levels, ZMA may also improve sleep quality. The product is also ideal for those looking for an all-natural boost to their workout and has been shown to have no known negative side effects.