There's No Such Thing as a Core
We're told a strong core is the foundation of a healthy body. Pilates instructor and MMIA co-founder Paul Thornley makes the opposite case: there is no single "core," and chasing one can quietly create the very injuries it's meant to prevent. This is a conversation about why fit people still get hurt — and how moving smaller and rounder changes everything.
Why strong bodies still get injured
Paul's own story starts with an injury he couldn't explain — badly hurt in training while he was, by every measure, extremely fit. The puzzle drove his whole career. His answer: most exercise is built on a linear, machine-like model of the body — straight lines, fixed planes, parts working in isolation. But we aren't machines, and moving as if we are is exactly how strong, well-trained people end up hurt.
The myth of the core
The "core" is treated as a powerhouse to be hardened and stabilized. Paul calls it the mythical core. The region everyone trains to be rigid is actually meant to be highly mobile — it's where movement flows from, and it's full of organs that depend on the breath. Make it hard and you don't protect it; you immobilize it. Over-training a restriction is how Paul now sees clients in their twenties with problems that used to appear decades later.
The body is pressure, and breath is the valve
The body is a volume — a pressurized, fluid system, not a stack of parts. When you brace and harden a region, the pressure inside has to go somewhere. If it can't move out through the breath, it finds another way out, and that's where problems begin. Breath is the valve that lets the body regulate its own pressure. When breathing is free, the body can move and adapt; when it's held, pressure builds where it shouldn't.
Move smaller, move rounder
We live on a spinning planet, and everything in nature moves in the round. Paul's work is built on rotation and micro-movement — small, spiralling, attentive movement rather than big, linear, forceful effort. Small changes are the ones that actually hold: achievable, sustainable, and far kinder to the body over a lifetime than constantly pushing the body's outer limits until it stops you.
About Paul Thornley
Paul Thornley is a Pilates instructor and co-founder of MMIA (Myofascial Magic in Action), a movement education program. With a background in martial arts, the military and neuromuscular therapy, he has spent close to 30 years studying why people get injured and how to move in a way that prevents it. You can find his work at myofascialmagic.com.
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