Originally Posted by California Jack
Sort of GM. It depends how you train. Johann Blake has no troubles with opposing physiological reactions.
Johan Blake is a sprinter. ANYONE who knows anything knows sprinting is invaluable with regard to training in the Crossfit/interval/threshold training world. I do not know how Blake trains but I doubt it involves significant distance running. I bet he lifts weight-squat/dead/bench etc. Sprinting is regularly programmed in Crossfit gyms across the world.
I don't expect he trains Crossfit, nor should he. Just like an Olympic class weightlifter or world class powerlifter, he should train specific to his trade.
Running-or perhaps jogging-which is more likely what people do should not be confused with sprinting.