Heres a thought...Do peoples responses to AAS have anything to do with somatotype...?
Measo's are naturally big and strong - so you could imagine they grow more and responsd to AAS much more than ectos...on the other hand you could say that because they are allready big and strong the effects of roids are not as profound as ecto's who are naturally weaker...thus when they introduce muscle and strength building compounds into there body, they grow much more in comparison to measo's...