[youtube width=”640″ height=”360″]https://www.youtube.com/watch?v=aX5yimjE63o[/youtube]
The Encyclopedia of Underground Strength & Conditioning
Available At Amazon HERE
Dragon Door HERE
![Zach with Quattro Deuce (Navy SEAL) & SPARTAN Race Founder, Joe DeSena](https://undergroundstrengthclub.com/wp-content/uploads/2014/09/Zach-QD-Joe-Spartan-Underground-Book-e1410266974759.jpg)
The Encyclopedia of Underground Strength & Conditioning
Available At Amazon HERE