Hi, it's Mark Sisson. Welcome to the Primal Blueprint Podcast. It's time for another show dedicated to the world of keto.

Check out KetorReset.com for details about my New York Times bestselling book and send your questions to info at Ketorreset.com.

Greetings, listeners. Let's get to an incredibly interesting and random assortment of questions on all matters of healthy living. Just a wild ride. You'll see what I mean when I start reading the various topics that come through

some success stories, some inspirational stuff. You'll love it. Let's start with Philip.

Hey man, love your podcast. Thank you. I've been keto for 15 months and lost 40 pounds. Never felt better. I picked up biking

in a competitive way and I'm getting ready for a 40K time trial event in September. So that's a 24.8

mile race against the clock, a very tough competitive event. He says he thinks he should be able to complete it in an

hour, which is extremely fast. That's pumping a bicycle 24.8 miles in a single hour. And his message,

his question is, I usually fast until 1 p.m. But since my race is at 9 a.m., should I eat before?

And if so, what should I eat? Should I eat the day of event or the day before? Actually, there was a typo. Maybe he dictated it to Siri, and he says, I usually fast until 1 p.m., but my rave is at 9 a.m. So he's training for a rave. I'm going to say it was a race, right, Philip,

a 40K, a 40K rave. Oh, it's going to be groovy, man. So that's a really interesting question

that applies to a lot of people who are doing the keto thing and wanting to balance it

with competitive aspirations. We've talked to the endurance community

a lot about come race day when you need to refuel for competitions going for longer than 90 minutes

or two hours. Of course, you can consume whatever you need to consume to get you to the finish line.

Look at Zach Bitter's blog when he broke the American record for the

100-mile run on the track, completing 100 miles. That's 400 laps if you're counting, which I'm

sure some people had to all day long. In 11 hours and 46 minutes, absolutely unbelievable. It

equates to like a 7-something mile all day long on the track. I'm absolutely amazed. And he went to the trouble to chronicle everything he consumed during the event on his blog. And he had an assortment of random stuff. I remember breezing through it and looking at slugging down a mountain dew here and some cookies there.

Of course, the proper energy fuels, the high-tech stuff that's in a wrapper.

But the central point was this very low-carb athlete.

He's now deep into the carnivore scene and been experimenting for many years with elite level ultramarathon performance running

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