Hey folks, it's Ben Greenfield and with me today is the author of the book Body by Science.

Dr. Doug McGuff, who is an MD and I believe now works in emergency medicine, but he also

has very big background in exercise and fitness.

As I just mentioned, he's written a book and he has created a workout program, which

actually happened to do yesterday and I have to admit I'm a little sore.

So Dr. McGuff, thanks for the soreness, thanks for coming on the call.

My pleasure, happy to be here.

So you're an emergency doc.

How did you go about getting the opportunity to write a book about fitness?

Was it just something you decided to do or?

No, actually, it was an interest in fitness that led me into medical school in the first

place and that's always been an interest all the way through high school, college, medical

school, residency and onward.

I knew that I had always wanted to own a gym or an exercise facility at some point.

In 1997, I opened a personal training center conducting high intensity exercise and I always

thought that the value of high intensity exercise was pretty severely underrated and that's

what ultimately led me to write the book.

I wrote the book to have something that I wanted to read.

So many times when I go into the bookstore looking for something interesting, I walk out

frustrated and that's largely what motivated me and my co-author John Lill to write this

book was actually to produce something that was a good intellectual defense of high

intensity exercise and to give someone an understanding of the reason why it is a good

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