A Natural Testosterone Boost Our Tributrone Z has been carefully researched and developed to provide you with the latest cutting-edge natural testosterone boosting ingredients available on the market. Tribulus Terrestris extract boosts testosterone levels, to speed fat loss, to enhance strength, to enhance endurance and to boost muscle mass, muscle tone and overall athletic performance. Testosterone is the key building block of muscle and many other benefits namely overall health and sexual wellbeing to name a few. The most important hormone responsible for lean muscle mass and overall muscle growth in the body is testosterone. Our tributrone z helps provide balance in the link between lean muscle mass, a healthy hormonal profile and overall health and longevity. Naturally increased testosterone levels have been shown to accelerate muscle growth, muscle strength and improve recovery times. It also increases the metabolic rate, helping to burn more fat and increase the body ability to incorporate protein into lean muscle mass.