Also, I must add that I ran my first cycle (tren+test e) without arimidex.. I was foolish and I didn't know much about controlling estrogen while on cycle but i knew of PCT. I also figured there wouldn't be a high aromatization rate since tren doesn't aromatize. My point though is that i had levels of 800+ estrogen but no side effects? I had no puffy nips, no gyno, nothing.