The human body, male or female, has a ratio or natural balance of hormones, such as Testosterone and Estrogen. Anti-Aromatase is designed to inhibit the conversion of Testosterone (androgen) to Estrogen. This naturally occurring conversion is the result of the body noticing that there is an abundance of Testosterone in the body and in the hopes of maintaining its normal homeostasis or balance, converts some of the "excess" Testosterone to Estrogen. This conversion is especially prevalent in athletes supplementing with Testosterone enhancing pro-steroids or anabolic steroids. The body recognizes an abundance of the Testosterone hormone and increases it's rate of conversion of that hormone to Estrogen. For an athlete whose goal is to increase muscle size and strength while decreasing their recovery time, this reduction in Free Testosterone, supplemented or not, results in a metabolically induced step in the wrong direction.