Add Yahoo as a preferred source to see more of our stories on Google. The first rule of scientific fight club is that you have to agree on what you're fighting about. A newly published debate on the ...

The first rule of scientific fight club is that you have to agree on what you're fighting about. A newly published debate on the merits of polarized training in endurance athletes, in Medicine & ...

The first rule of scientific fight club is that you have to agree on what you’re fighting about. A newly published debate on the merits of polarized training in endurance athletes, in Medicine & ...

The mantra of polarised training is ‘go easy or go hard – never in between’. But what if that’s all wrong? Rob Kemp meets the coach who says the middle is where the magic happens For more than two ...

Alex Hutchinson is a National Magazine Award-winning journalist and Outside’s Sweat Science columnist, covering the latest research on endurance and outdoor sports. One of the big debates in endurance ...