I do not advocate using an AI during pct UNLESS you have existing estrogen issues going into pct where it would be necessary. reason being is you NEED estrogen to function as a male. a lot of people think since its a 'female hormone' men don't need it so they crash their estrogen during pct.. this is wrong
the AI should be ran on cycle to keep your estrogen in check from day 1. not waiting till the end to add it.