Testosterone is, without a doubt, the most coveted hormone for athletes involved in all sports. The reasons are numerous, but the most desirable attribute is increased protein synthesis as a result of allowing you to maintain a positive nitrogen balance. This means considerably quicker recovery from exercise, so you can work harder and recover more quickly for increased strength and muscle building. Big Muscles supports and inspires sexual vitality. This powerful male-enhancement formula combines traditional botanicals and targeted nutrients to boost physical performance and pleasure. Big Muscles uses Tribulus extract that contains high concentrations of beta-sitosterol and furostanolic saponins. Beta-sitosterol and furostanolic saponins have been suggested in research to both to support sexual health and naturally boost testosterone and free testosterone levels. The Maca Extract as one of the key ingredients in Big Muscles is a Peruvian plant extract supports sexual health and natural testosterone levels. Big Muscles promotes enhanced energy levels, endurance and stamina, and reduce occasional mental fatigue.