So metabolic flexibility, if you look at a spectrum, on the right end, we have carbohydrates.

On the left end we have fat. Metabolic flexibility would say, okay, how well can your body use carbohydrates?

How well can your body use fat?

And then how well can you switch back and forth between both of those fuel sources?

So it's kind of three parts.

When I have carbohydrate use, fat use, and then the ability to switch back and forth between those.

So it's the ability to use therition Radio, the podcast where we talk about the science of nutrition and health.

We're at episode 250 of the podcast today. And as ever, I am your

host, Danny Lennon. You are very welcome. And thank you for tuning into the podcast today.

Before we get into this week's show, just a couple of announcements. First off, remember, we are

just about a month out from Sigma Nutrition Radio Live,

which is happening in Dublin, Ireland, on November 24th, where on stage I'm going to be joined

by four true, true experts in the field of nutrition.

I'm going to be joined by Dr. James Martin, who is head nutritionist at Team

Sky, formerly of Liverpool Football Club, and is a professor at Liverpool John Moore's University.

I'm going to be joined by Dr. Nicola Gess of King's College London, who is a researcher and lecturer

in diet and diabetes research. Also by Martin MacDonald, who is the head of

Mac Nutrition, who I've talked about many times before as a longtime mentor and of course

creator of MNU. And then Dr. Kirsty Elliott Sale, who is a researcher and professor in

female physiology at Nonium Trent University. We're going to have deep discussions

over the day. You get to ask your questions to the expert guests. You're going to get hang out

with a bunch of other amazing people that are nerding out on nutrition just like you. And then we're

...