Uploaded February 2026 | Updated September 2026, 2 weeks ago

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In this video, Martin Rios explains why he wears a $750 oral splint to the gym. Martin Rios goes over PRI concepts and how jaw position caused him to have R neck pain and headaches and why wearing an oral splint helped fix his posture and allow him to lift pain free and without compensations.

#pri #weightlifting #workout #gym #posture #hypertrophy #athlete