Our featured guest is, of course, Dr. Stephen Seiler, a professor of sports science in Norway, where he has lived for over 20 years. He sits on the executive board of the well-respected European University College for Sports Science. It was his groundbreaking research that helped define the polarized model. We also hear from Dr. John Hawley, another prominent name in the exercise science world from Australia. He talks with us about one of the important, but lesser-known, gains of long rides.

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