© Kirby Lee-Imagn ImagesBy most measures, Norwegian triathlete Kristian Blummenfelt is the standard of peak performance in athletics. Before we get to Blummenfelt’s new record, let us first broadly define what VO2 Max is in the first place. The broadest definition of VO2 Max that is widely used is that it “is a measure of physical fitness.” So simple, right?! Scroll through his Instagram slides here to see the video proof:How Does Kristian Blummenfelt Have Such A High VO2 Max? I have been looking int doing a VO2 Max + Dexa Body Composition combined test but they are not cheap.