

Jeff Martin
Underdogs Athletics Teen Coach
Certifications & Accomplishments
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Co-Founder & CEO, The Brand X Method®
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40+ years of Coaching experience
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Brand X® Director of Youth Training
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Brand X® Certification Staff Lead Trainer
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Co-developer CrossFit Kids program 2004-2014
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Co-developer CrossFit Kids Course 2008-2014
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Director of Youth Training 2011-2014
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HQ Training Staff 2011-2014
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HQ Coach and Trainer, Levels 1-4 2004-2014
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Games Southern California Regional Head Judge 2009-2011
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USAW Club Coach
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USAW Sports Conditioning Coach
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ACN Advisory Board 2021
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TeenLIFT Founding Board Member 2017
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StandUpKids Advisory Board Member 2016
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5th-degree Kenpo Karate black belt (sifu)
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KMNTC-certified Krav Maga instructor
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USA Powerlifting California state record holder
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Collegiate Athlete - Water Polo
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BA Psychology SDSU
My Story
As Co-Founder & CEO of The Brand X Method® Jeff brings over 40 years of Coaching experience to his roles as Director of Youth Training and specifically his work with youth and Teen Athletes. Brand X® is now a system for Youth Programs, including world class education, curriculum and resources for youth coaches.
There are now over 60 Brand X® Training Centers around the world and thousands of coaches. Jeff was an early adopter of the CrossFit* methodology becoming the 5th affiliate in the world and being tasked with developing the CrossFit Kids* Program, and Certification along with his wife Mikki. Jeff was Director of Youth Training for CrossFit 2011-2014, HQ Training Staff, and attained Level 1-4 Coach through 2014, and was a Games Southern California Regional Head Judge 2009-2011.
Jeff is also a USAW Club Coach and a USAW Sports Conditioning Coach, He acts as an advisor or founder on multiple fitness related Boards, such as ACN/ Athlete Coach Network, TeenLIFT and StandUpKIds.org.
At the age of 52 he became a USA Powerlifting California State Record holder.
Jeff's early career includes a first coaching job as an assistant coaching High School swim. As a collegiate athlete he played goalie for the University of Redlands in water polo. Pursuing his long standing passion for Martial Arts, he became a 5th degree Kenpo Karate Blackbelt, as well as a KMNTC Krav Maga instructor in addition to many other accomplishments in various martial arts disciplines.
*He and his wife Mikki, as well as Brand X® are no longer associated with CrossFit or CrossFit Kids
Get In Touch
Click the link to submit an inquiry for individualized coaching or email info@underdogsathletics.com for media inquiries.