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May 24, 2018

In the beginning of my article "Shooting Up Stem Cells", you see a video of me grunting, groaning and pushing against a special machine designed to quickly exhaust the muscles and allow for extremely efficient and effective "single set to failure" training.

Since then, I've mentioned this "special machine" in multiple podcasts, and I've finally managed to get the inventor onto my show... .

The machine is called a "PeakFitPro" and the man who designed it is Dr. Chris Montanaro DC, DIBAK, DCBCN.  Dr. Chris is a chiropractor and a Diplomate in AK and a Diplomate in Nutrition. He teaches certification courses to doctors of various disciplines including doctors of chiropractic, medicine, naturopathy, and homeopathy. Dr. Chris is also a member of the adjunct faculty of New York Chiropractic College & Palmer Chiropractic College in Florida.

Dr. Chris is also an Advanced Theta Healing practitioner.

During our discussion, you'll discover:

-How Tony Robbins and Pete Sisco got Chris interested in extreme efficiency in isometric training... 9:30

-The fascinating research behind "single set to failure" training, and how it actually works... 16:00

-How to do a "pull" workout and "push" workout using the PeakFitPro... 21:30

-How much time under tension is necessary to get the most out of isometric training... 24:45

-What's happening physiologically during isometric training that elicits such fast results... 34:00

-Whether there are any cardiovascular or endurance benefits to this style of training... 36:00

-Whether you need to do full range lifts, especially to maintain athleticism... 39:30

-Whether you can put on muscle or size or lose fat with this style of training... 44:30

-What is so special about the technology built into the PeakFitPro machine and app combo... 50:45

And much more!

Resources from this episode:

-The PeakFitPro (use code "greenfield" to save $200)

-My podcast with Dr. Doug McGuff

Episode Sponsors


Penguin Random House Audio Books

Birdwell Britches Use discount code "Ben" for 10% off your order.

Kion Lean

Do you have questions, thoughts or feedback for Chris or me? Leave your comments at and one of us will reply!