I understand that during my 12 week cycle I'm supposed to stop my AI on the 12th week... I'm just wondering why that is when the half life of test c is longer so obviously my test levels will still be elevated yet the half life of Aromasin is rather short... So basically during week 12-14 to 15 my test levels are elevated yet I will not be on an AI... Like I said I understand thats how its done however I'm just one of those people who always wonders why lol. Any vets have any input on this??