genetics determine if you win.
genetics only play a minor role in how big you can get. yes, not every body has the capability to get to olympia levels, BUT you can force growth on ANYone
genetics determine how you LOOK, not how big you can get.
some just do not withstand force feeding 24/7, injecting different shit 10 times a day, abusing anything and everything under the sun.
if you want to call that genetics then be it so. mindset is probably a genetic trait. but looking at the human body alone we havent seen a "limit" to muscle growth yet. in 30 years olympia competitors might weigh in at 350lbs on stage. we'll see.
lots of GH, slin, AAS, food = GROWTH.
dont grow? add in more of everything
ANYONE and i repeat ANYONE can get huge. IFBB level huge.
some just look like shit at that level, and THATS genetics.
muscle shape, fascia, (both can even be overcome by SEO), fiber composition, bone structure etc are genetic traits.
muscle size is not a genetic trait.