A Testosterone booster is a natural supplement (usually extracted from an herb) which increases testosterone levels in the body. Boosting your testosterone intake enhances the mood, helps gain muscle mass, and maintains a healthy libido. Testosterone boosters shouldn’t be taken regularly- they need to be cycled, which means 4-8 week intervals must be included inbetween intakes. Trec Nutrition's Testosterone boosters contain a range of herbal ingredients designed to increase testosterone, instead of artificially stimulating hormones.