In episode #86 of Confessions of a GroupX Instructor, Ellen sits down with Liz Filippone, a corrective exercise specialist who’s passionate about helping people move better, feel better, and perform better. Together, they unpack what “corrective exercise” really means and why understanding it can transform the way you teach, train, and even live in your own body.
We start with Liz's’s story—what led her into the world of corrective exercise, and how she found her niche within the fitness industry. They break down the concept in plain language so any instructor (or participant) can grasp it, and we discuss whether every group fitness instructor should have at least a foundational understanding of it.
From tight hips to rounded shoulders, Liz shares the most common movement dysfunctions seen in group fitness participants—and what instructors can realistically do about them in a packed room.
We cover:
Red flags you can spot from the stage without formal assessments
Simple corrective cues or programming tweaks that won’t derail your class flow
How to protect yourself from overuse injuries when you’re teaching multiple classes each week
You’ll hear inspiring “before and after” stories where corrective exercise completely changed someone’s life—and what happens when well-meaning instructors try to “fix” people without the proper background.
We also discuss that delicate line between fitness and therapy—when it’s time to refer a client out to a medical or rehab professional.
Ellen and Liz wrap up by exploring how corrective exercise has shaped Liz's own approach to training and teaching.
Plus: if our guest could wave a magic wand and correct one common dysfunction in the world, what would it be?
Follow Liz Filippone on @lizfilippone
Learn more about corrective exercise with Liz at https://www.mindfullyfitninja.com/
Book a call with Liz: https://calendly.com/lizfilippone/30-minute-consult?month=2025-10
Listen to more episodes of Confessions of a GroupX Instructor wherever you get your podcasts!