This supplement increases your natural production of testosterone by 400 percent! (healthandfitnessvitality.com)
However, it is a welcome addition, as research has shown that it corresponds with increased production of testosterone. (dbstrength.com)
The high - intensity nature of the program coupled with the resting periods creates a perfect environment in a man's body for production of testosterone and growth hormones. (justinkavanaghfitness.com)