Juan Leija is a leader in functional performance and holistic training, a trailblazer in the evolution of what it means to be strong, capable, and human. As the Director of Fitness Programming at Onnit Gym in Austin, Texas, Juan has been a pillar since day one, shaping one of the most forward thinking performance ecosystems in the industry.

With over 20 years of real-world coaching experience, Juan is the creator of the Unconventional Gym Athlete methodology,  a movement system that fuses barbells, kettlebells, maces, sandbags, bodyweight flows, and conditioning tools into a seamless training approach designed to unlock mobility, athleticism, and resilience.

Juan’s mission is clear: to develop not just bodies, but humans that move better, think clearer, and live stronger. His programs serve everyone from elite athletes to military operators, first responders, and driven everyday athletes who want to perform well in the gym and beyond it.

What separates Juan is his uncommon depth is he is  a coach who trains for durability, not just for force. With a foundation rooted in intelligent programming, joint health, breath work, mobility, and active recovery, his work is centered on creating sustainable performance over a lifetime.

Driven by a philosophy that strength is nothing without adaptability, Juan educates and equips his community with tools to master training, nutrition, recovery, supplementation, and mindset — not for vanity, but for vitality.

Relentless in refinement. Grounded in purpose. Juan Leija is redefining what it means to train for longevity!

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