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Zach's company, Underground Strength Coach, is located in Edison New Jersey. Check out two of his websites, http://zacheven-esh.com/blog/ and http://www.undergroundstrengthcoach.com/.
I have started incorporating his techniques in my workout, as well as the athletes and individuals I train. I have seen quick results using his workouts.
I encourage all to pick up a rock or a sandbag and get to work. Maybe flip a tire a few times. Not only will your strength increase, but you will also feel increased energy as you train outside with gladiator techniques.