Proviron has four distinct uses in the world of bodybuilding. The first being the result of its structure. It is 5-alpha reduced and not capable of forming estrogen, yet it nonetheless has a much higher affinity for the aromatase enzyme (which converts testosterone to estrogen) than testosterone does. That means in administering it with testosterone or another aromatizable compound, it prevents estrogen build-up because it binds to the aromatase enzyme very strongly, thereby preventing these steroids from interacting with it and forming estrogen. So Mesterolone use has the extreme benefit of reducing estrogenic side-effects and water retention noted with other steroids, and as such still help to provide mostly lean gains. Its also been suggested that it may actually downgrade the actual estrogen receptor making it doubly effective at reducing circulating estrogen levels.
Conventionally, athletes use Proviron during a cutting phase when it is most effective and beneficial. It provides a strong hardening effect. The product ensures a great fat burning option. The binding to the androgen receptor provides a dependable melting of fats. Simultaneously, it protects the body from muscle loss. This is the most valuable trait of this steroid. In addition, it causes almost no water retention, which a tremendous advantage in comparison to other similar anabolic steroids. An enhanced androgenicity easily provides these options.