Hard muscles who has em

[Deltasaurus]

yeah yeah when i flex my shit is rock i mean thoes guys who are hard unflexed what helps build that quality of muscles?? From you exp what gets the muscle rock hard while unflexed???

[Voland]

I have no clue. I'd like to know. Been told by a former Mr. Universe that that rock solid is achieved basically with diet, getting ripped and changing slightly the way you train. But genetics play a role too.