graphic interpreting polarized training method as 80/20 mix of intensities, from green to yellow/red

How to Achieve Polarized Training’s Greatest Prize: Durability

Polarized training is all about building duration without incurring high stress. Where does your steady state break down and what can you do about it?

swimmer picture - durability

Polarized training is all about building duration without incurring high stress. Where does your steady state break down and what can you do about it?