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That was literally how this thread started 8 years ago.
I think it was more that steroid users increased their muscle cell size (or number?) beyond what they could do normally and this could then be trained back up to easily after stopping the juice. Basically, cheat once and you're always getting some benefit from that drug use.
Testosterone 2010:
http://ergo-log.com/testosterone-propionate-can-have-permanent-effect-on-muscles-animal-study.htmlSteroids 2013:
https://www.physoc.org/press-release/2013/steroids-muscle
http://www.bbc.co.uk/news/science-environment-24730151
So a new study has shown that muscle memory exists at DNA level, meaning that dopers get the training benefit from doping well after any bans may have ended.
https://www.keele.ac.uk/pressreleases/2018/studyprovesmusclememoryexistsatadnalevel.php