Understand the System: Why You Can't Fix What You Can't See
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Nervous System Regulation4 min read

Understand the System: Why You Can't Fix What You Can't See

By Tracy Tanguay

August 3, 2026

nervous systemmobilityathletic performanceinjury preventionmovement patternsbiomechanics

Why You Can't Fix What You Can't See: The Truth About Movement System Assessment

If your knee hurts, you go to the doctor. You get an MRI, they look at the knee, they find a little inflammation, and they treat the knee. But what if the knee is screaming for help because your ribcage isn't communicating with your pelvis? What if your body is literally compensating for a nervous system that doesn't trust your movement?

This is the problem with chasing symptoms. Most training models focus on the destination—the max lift or the end-range position—while ignoring the mechanism behind it. If you want to stop chasing pain, you need a comprehensive movement system assessment that views the body as a whole, rather than a collection of broken parts.

The Liminal Space Philosophy

At The Liminal Method, we define the liminal space as the threshold—the transition between where you are and where you are going. Most trainers are obsessed with positions, but elite movement isn't just about the positions you can hold. It is about how efficiently you travel through the space between those positions.

When your system stops managing the space between demands, that is where energy leaks occur. You aren't just "tight" or "weak." You are likely bracing because your nervous system doesn't trust the movement, forcing you to pay a high energy cost to maintain stability. You cannot fix what you cannot see, and if you aren't looking at the whole system, you are missing the most important part of the puzzle.

Why Comprehensive Assessment Matters

The reason most athletes hit an information ceiling is that the science of movement is often locked behind jargon. We see an injury epidemic across all levels of sports, and the root cause isn't just bad luck. It is the foundational gap: coaches and athletes are building power on top of movement patterns that were never properly corrected.

My approach relies on five pillars of movement: Breathing, Opposition, Connection, Grounding, and Transitions. If your breathing is shallow or you are holding tension, your nervous system is signaling that it doesn't trust the movement. If you lack opposition—the conversation between opposite corners of your body—you are likely leaking energy through unnecessary bracing. By identifying where these pillars break down, we stop guessing and start building a resilient athlete.

How It Impacts Performance

When you stop chasing symptoms and start optimizing the system, the results speak for themselves. This methodology, which I have brought to 27 of 30 MLB organizations, focuses on reducing energy leaks and optimizing the nervous system to handle athletic demands.

  • 15x fewer days on the Injured List (4 days vs. 50-day league average).
  • 87% of pro clients on the mobility series spent zero days on the IL.
  • 0.63 ERA reduction for pitchers across the full season.
  • 2-5 mph velocity increase in 48% of pitchers.
  • 80% increase in home run rate for hitters.
  • 69% of pitchers increased K/9 rate.
  • 93% of players promoted at least one level.

Practical Steps to Better Movement

You don't need fancy equipment to begin auditing your own movement. Start by looking at the foundations before you load the bar. Here are a few ways to start integrating a system-first approach today:

  • Prioritize the Breath: Use short, seated breathing to ensure your nervous system is regulated. If you are bracing or your shoulders are rising during a simple exhale, your system is not ready for high-intensity work.
  • Find Your Opposition: Focus on diagonal cross-body movements. If you can't maintain a conversation between your opposite hand and foot, you are likely compensating, which increases your risk of injury.
  • Respect the Transitions: Instead of just training end-range positions, focus on the movement between them. Can you move from a quadruped position to a lunge with control and steady breathing? If not, that is where you need to spend your time.
  • Ground Yourself: Remember that the ground is information. Your nervous system uses pressure through your hands and feet to organize your entire structure. If you aren't feeling the floor, your system is likely guessing.

The Bottom Line

Fixing your movement isn't about doing more work; it's about doing the right work. You have to see the whole picture to understand why your system is failing you. For a deeper dive into these protocols and the science of how we regulate the nervous system, check out my book, "Sh!t About Movement You Should Know."

Stop training like a machine and start training like a human being who has a nervous system. The efficiency you are looking for isn't in a new exercise; it is in how you connect your body to the ground and your breath to your movement.

The Framework

The Five Pillars of Movement

The foundational components of the Liminal Method

01

Breathing

The regulator. Everything downstream is compensating if this isn't right.

02

Opposition

The diagonal conversation between opposite corners of the body.

03

Connection

The thread between joints, from the ground up.

04

Grounding

Information from the floor used to organize the entire system.

05

Transitions

Managing the space between positions to eliminate energy leaks.

Ready to Go Deeper?

The Liminal Method Programs

The 12-Week Mobility Series and UNFCK Your Nervous System programs are built around these exact principles. Trusted by 27 MLB organizations.