intervals or any type of exercise intensity is prescribed with a feel.

It's prescribed by feel, and it can be a zone feel.

But that should be part of the educational process of the coach athlete

is to know what zone 2 feels like, know what zone three feels like, know what zone five feels like.

The Triathlon Show, 128. Hey, what's up everybody and welcome back to another episode of that triathlon show.

The podcast presented by ScientificTraflon.com.

I'm your host, Michael, and on today's episode I interview Professor Paul Larson on the topic of interval training.

This is a long interview because it ended up being really, really interesting and good, I think.

So I split it in two, you'll hear part one today and part two on Thursday.

To give you a bit of a background about Paul, he is a junk professor and performance physiologist at Auckland University of Technology.

And he led the performance physiology team at high performance sport New Zealand for both the London and

Rio Olympic cycles. He is also a coach himself. He coaches elite triathletes like Kyle Buckingham,

for example. And he is currently writing a book with Martin Boucher titled The Science and Application of High Intensity Interval Training,

which is the topic of today's interview as well.

But before that, let's thank precision hydration for supporting this podcast.

At the time of this recording, I'm just wrapping up planning some epic bike rides for a

training camp that I'm organizing in the Algarve in southern Portugal in just a little bit more

than a week now that you, or now that I record this, I should say. And you'll bet that those

long bike rides will see me filling my bottles with precision

hydration to keep me hydrated and keep my electrolyte stores tapped up so that I don't suffer from

cramps, which would be easy to do in that heat, or even just performance decrements if you let your electrolyte stores run low.

So I'll use my typical pH,000, which I mostly use for training, sometimes in really hot

...