Hey folks, it's Ben Greenfield and with me today is Dr. Tim Knokes, the South African

physiologist who has been on this show in the past and has shared with us a great deal

of valuable knowledge about electrolyte intake and also about something called the central

governor. And today we're going to be discussing some of the concepts that Dr. Knokes lays out

in his new book, which is called Water Logged, the serious problem of over-hydration in

Endurance Sports. I read this book, I finished it a couple of weeks ago and it's pretty

mind-blowing in terms of the amount of knowledge that it contains that you never ever learn.

You know, and I spent five years in university learning what was supposed to be everything

you need to know about how to fuel the human body during exercise and did not learn

any of the stuff that Tim talks about in his book. So Dr. Knokes, thanks for coming

on the call today. Thank you, Ben. I appreciate you having me back again.

So let's jump right in. You start this book out with the case study about this girl named

Cynthia Lucero, who is going to run the Boston Marathon. Can you talk about what happened

there and why it's a perfect way to outline why this book needs to be written?

Well, the tragedy for Cynthia is that we predicted this was going to happen. I predicted in 1992,

we had the Editors of Runners World here, sorry, it was 1993, and we had the Editors of Runners World

here, including Ambi Berff, who wrote the introduction to my book. And the first lady had died

from this over-drinking during the Valley of the Giants race in California, that very weekend.

And I said, Ambi, there are going to be many more American females who are going to die in

marathon races, unless we do something about it, because you guys are over-promoting drinking

in the United States, and it's going to have tragic consequences.

And so the next case that occurred was in the Chicago Marathon in 1998. But that case,

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