Golden era bodybuilders ate according to the competitive seasons, but they rarely "bulked up" like guys do today, they were more like the figure athletes of today where they didn't get more than 10-15ibs above their competitive weight. Today things like alchohol are taboo for bodybuilders, but reg park was known to drink guiness (milk stout) to help gain weight. It was more of an exercise in moderation than tightly controlled macro nutrients, if it was time to gain muscle they ate more often, up to 6 times a day, and when they were getting ready for a competition they normally ate 3 meals a day. To get ready for competition they would just reduce "fattening" foods instead of eating 290g of protein 50g of carbs etc.
It isn't that they cant see the solution.
It is that they cant see the problem.
No Bullshit no problems
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