Mike Mentzer Explains the Casey Viator Transformation – Colorado Experiment 💪🔥
0:48
YouTube|Self-improvement HDC
Mike Mentzer Explains the Casey Viator Transformation – Colorado Experiment 💪🔥
In 1973, Casey Viator made bodybuilding history—gaining 63 lbs of muscle in just 28 days during the legendary Colorado Experiment. Mike Mentzer loved telling this story: Viator didn’t just gain muscle—he burned fat too, all thanks to Heavy Duty High-Intensity Training. Short, brutal sessions that broke every rule of conventional training ...
9.5K views3 months ago
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