New Alpha Nutrition Rock Hard is a testosterone booster that helps to speed up all body functions makes you energetic and improves your stamina. It is a penile enlargement supplement, which means that it may increase the size of your penis and ensure long-lasting erections. It also increases libido and sex drive. The way it increases power, stamina, and energy makes it easy to enjoy the sexual pleasures of life. Last but certainly not least, it increases the body mass and makes you get lean muscles. It performs all these functions by balancing one hormone that controls all of them. This hormone is testosterone that accounts for almost all masculine features and health.