There is always a mix of ideas on the subject, but it makes sense to me to use a strong AI during cycle, and a weeker AI post cycle E.O.D. (calc-D glucarate/dim/chrysin), with a serm, test booster, and a cortisol blocker. The AI during cycle will keep the higher amounts of test in your body for a longer period of time since they are not being converted. And post cycle you want estrogen to rise, if it doesn;t you want regain balance. Just what I think bc I believe Dave Palumbo when it comes to this stuff, but I am sure someone on here disagrees