Patrick Arnold SERM's not all they are cut out to be

[Jelisej]

To simplify things- SERM cheats brain into thinking that there is not enough estrogens, so it raises testosterone to get more estrogens (via aromatisation). So advantage of SERM over AI as PCT is that it works much faster, also as Rodja said SERMS raise SHBG a bit which helps recovery process as after any serious cycle SHBG will be virtualy reduced to zero.
IMO best option is SERM+ little bit of AI- lot of people are doing mistake and overdose SERMS, as sometime with too high dose you get opposite effect.
Now, fact is that raising testosterone with SERM or AI dont yield same benefits as with natural or even exogenous test, and also TT:E and TT:SHBG (levels of free test.) ratio is important- and also (IMO) testosterone effect on wellbeing is bit overated.