Guard the Guardians

Guard the Guardians with Sean Hansen is a show with the sole purpose of helping active military, veterans, first responders, and their families live better lives whether it's overcoming trauma, managing finances, improving relationships, getting in shape, or anything in between.
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Guard the Guardians


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Apr 11, 2017

Today we learn about maximizing our physical performance by tapping into "energy system" training. OPEX Fitness founder, James Fitzgerald, started creating the OPEX system after winning the CrossFit Games and realizing that power, speed, and stamina could be developed together.  By training those three energy systems in coordination, OPEX clients and athletes have been able to optimize their performance.  OPEX is largely recognized as a dominant player in getting professional athletes ready for the intense competition required at the CrossFit Games, but OPEX also works with people from all walks of life to help them reach their fitness goals.

To fully discuss the workings of energy system training we are rejoined by Coach Justin Biays who helped us understand the fundamentals of fitness in episode 007. Additionally, Justin's coach, Brian Foley, a long-time trainer and head coach at OPEX Fitness HQ, will be delivering his expertise on the OPEX method as we talk through the various applications of energy system training.

Join us as we discuss:

  • How the OPEX system is different from other fitness systems.
  • The nature of the three energy systems: creatine-phosphate, glycolytic/alactic, and aerobic.
  • Why traditional unit-level PT can be ineffective.
  • How energy system training applies to tactical athletes.
  • How a training cycle might be structured based on specific goals.
  • Why skills work specific to your intended activity is critical.
  • Why training across energy systems benefits all types of athletes/performers regardless of chosen sport or activity.


Brian Foley:

  • Website:
  • Instagram:; @brianfoleyopex

Justin Biays


Guard the Guardians with Sean Hansen is the show with one mission: help active military, veterans, first responders, and their families live better lives. You served us, now let us serve you. Please subscribe and share with your friends and family.

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