The last trick I heard is after their food and water cuts, an hour or so before they walk on stage they eat a pop tart or 2 to draw the remaining Sub Q water to digest and enhance the appearance.

Carbs, 4 parts water to digest 1 part carb. Don't quote me not a doctor.

Ronnie was a legit powerlifter. Natural numbers were high and that's likely what made him what he was in bodybuilding with the genetics.