[flamesabers]

I knew that taking PM decreases muscle mass and strength, but what I'm more interested in is how it will effect the degree of feminization and breast growth. My curiosity stems from wanting to be masculine above the waist, and quite feminine from the waist down.

From what I understand, exercise raises one's testosterone level. As to whether that will be enough to hamper or even stop your NBE progress, I don't know. In order for your strategy to work, there would have to be a set zone in which testosterone is adequate to enable muscle growth but not high enough to block estrogen from incurring breast development.

Another challenge to consider is your body fat level. If it's too low (or becomes too low from your weight lifting), you may not see much breast development for a while.