Just to be absolutely clear on this topic, Proviron IS NOT and anabolic steroid. It is 100% androgenic. Some pro female BBs use proviron combined with Nolvadex for no more than 4 weeks pre comp to reduce estrogen levels, which helps them 'harden up' and lose excess water. But it is not anabolic or even anticatabolic, so won't help much with mass gain or retention, and a women definitely runs a high risk of masculinization.