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Hey folks, it's Ben Greenfield and I've got Dr. Jack Cruz on the call today.

Jack, it's a pretty huge pleasure to have you back, man.

I appreciate being back.

You know, if you don't know who Dr. Jack Cruz is and you're listening in,

head over to Jack Cruz.com.

He's a neurosurgeon who writes on a variety of topics but he's really, really on the pointy end of things

when it comes to health and health versus performance and health versus living in a modern world

and health versus our modern diet or our paleo diet.

Just a huge wealth of information.

He's the guy who first appeared on this podcast last year and talked about cold thermogenesis

and if you haven't had a chance to listen to that show, I'm going to put a link to it in the show notes

but he's also an expert on that topic as well.

So today though, we're talking about something completely different kind of related.

It's carbs and performance and whether or not you actually need carbs for performance.

So you know what, I figured we should probably just take the deep dive right in.

So Dr. Cruz, why do you say you don't need carbs for performance?

Well, the answer to that is pretty complex but I want to start off with probably two things

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