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Yes, but that shows he is working on his cardio, the only way Big Johny could beat him. Not anymore.Looks like they're testing his maximum volume of O2. That's just a test to see where is endurance is at.
You can do this research by yourself, you're a grown man. Top athletes in any sports use that "nerd science" in their favor.What really works? You didn't show us anything. Was that the point?