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NASM-CES Certified · Austin, TX

Austin's Corrective Exercise Specialist.
We Fix the Joint Before Loading the Tissue.

Chronic back, shoulder, knee, and hip pain aren't random — they're the result of kinetic chain dysfunction accumulating over years of desk work, poor loading patterns, and missed corrective windows. RxFit resolves it. At your home.

Book A Complimentary Assessment → See Pain Conditions
NASM-CES

Corrective Exercise Specialist

NASM-CPT

Certified Personal Trainer

Microbiology

Clinical Foundation

200+Executives Treated
5.0★Google Rating
NASMCES Certified
9yrsClinical Practice
What Is NASM-CES?

The credential that separates corrective specialists from general trainers.

The NASM Corrective Exercise Specialist (CES) is the gold standard clinical certification for movement assessment and dysfunction resolution. It is not a general fitness credential — it is a post-professional specialization that requires a foundational NASM-CPT certification and additional advanced study in anatomy, biomechanics, and pathomechanics.

A NASM-CES practitioner is trained to systematically identify overactive and underactive muscles, compensatory movement patterns, and joint dysfunction through the Optimum Performance Training™ (OPT™) model. Where a standard personal trainer counts reps, a CES-certified specialist reads tissue.

Danny Trejo's microbiology background deepens this further — bringing a cellular-level understanding of tissue adaptation, inflammation response, and the biological mechanisms behind why corrective protocols work when they're applied correctly.

Get Your Movement Assessment →

// The CES Assessment Stack

  • ✦Overhead Squat Assessment (OHSA): Identifies compensatory patterns across the entire kinetic chain from ankle to shoulder in a single movement snapshot.
  • ✦Single-Leg Squat Assessment: Exposes unilateral dysfunction — hip drop, knee valgus, and rotational compensations that bilateral tests mask.
  • ✦Gait Analysis: Identifies foot pronation, hip extension deficits, and counter-rotation patterns that drive chronic lower back and knee pain.
  • ✦Pushing & Pulling Assessment: Maps shoulder impingement root causes — forward head posture, rounded shoulders, and thoracic kyphosis.
  • ✦Tissue Quality Audit: Manual assessment of trigger point accumulation and muscle tone imbalances in target muscle groups.
  • ✦Range of Motion Mapping: Joint-by-joint mobility benchmarks compared against functional norms for your movement demands.
Pain Conditions We Resolve

Six patterns. One kinetic chain. One protocol.

Every chronic pain condition has a biomechanical origin. We identify the chain failure, correct the upstream dysfunction, and reload the tissue — in that exact order.

Chronic Lower Back Pain
Kinetic Chain Failure: Anterior Pelvic Tilt / Hip Flexor Dominance

The overwhelming majority of lower back pain in desk-bound executives is not a spinal problem — it's a hip complex dysfunction. Chronically shortened psoas and hip flexors from 8+ hours seated anteriorly tilt the pelvis, compressing the lumbar spine and overloading the erector spinae and QL on every movement.

// RxFit Protocol

Inhibit overactive hip flexors via foam rolling + PNF stretching. Activate underactive glutes and deep core stabilizers. Progressively reload with hip-dominant patterns at functional range.

Shoulder Impingement
Kinetic Chain Failure: Protracted Scapula / Pec Minor Overactivation

Shoulder impingement — the pinching sensation during overhead or pressing movements — is almost universally caused by scapular protraction. Tight pec minors and weak lower traps allow the scapula to wing and protract, narrowing the subacromial space. The rotator cuff then impinges on every arm elevation.

// RxFit Protocol

Release pec minor and anterior deltoid. Activate lower trapezius, serratus anterior, and rotator cuff. Retrain scapular upward rotation before any pressing load is added.

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Knee Instability & Pain
Kinetic Chain Failure: Hip Abductor Weakness / Foot Pronation

Knee pain in executives who "haven't had an injury" is nearly always driven by proximal hip weakness or distal foot collapse. Weak hip abductors (glute medius) allow valgus collapse during load — the knee caves inward on every step, stair, or squat. Overpronating feet amplify tibial internal rotation, loading the medial compartment and IT band simultaneously.

// RxFit Protocol

Address foot arch mechanics and ankle dorsiflexion. Activate glute medius with isolated strengthening. Retrain single-leg loading mechanics with progressive neuromuscular control drills.

Hip Mobility Restriction
Kinetic Chain Failure: Hip Capsule Tightness / TFL Overactivation

Restricted hip internal and external rotation is the silent driver of both lower back and knee pain. When the hip can't move through full range, the lumbar spine compensates — absorbing rotational forces it was never designed to handle. The TFL and IT band become chronically overactive as they attempt to stabilize an immobile joint.

// RxFit Protocol

Joint mobilization targeting hip capsule. Inhibit TFL with targeted soft tissue work. Restore internal rotation with 90/90 mobility progressions and hip CARs (Controlled Articular Rotations).

Wrist & Forearm Pain
Kinetic Chain Failure: Thoracic Kyphosis / Elbow Flexor Tightness

Wrist pain in executives is rarely a wrist problem. Chronic keyboard and mouse positioning creates elbow flexor shortening, wrist extensor overload, and forearm pronation. Upstream, thoracic kyphosis and forward head posture create neural tension along the median nerve pathway — the same mechanism driving carpal tunnel presentations.

// RxFit Protocol

Thoracic spine extension mobilization. Release elbow flexors and forearm pronators. Strengthen wrist extensors and periscapular musculature to remove neural tension at source.

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Neck Pain & Headaches
Kinetic Chain Failure: Forward Head Posture / Deep Neck Flexor Inhibition

For every inch your head moves forward of center, your cervical spine experiences an additional 10 lbs of compressive load. Executives averaging 6+ hours of screen time present with suboccipital hypertonicity, deep neck flexor inhibition, and chronic upper trap overactivation — a triad that generates both local neck pain and tension-type headaches.

// RxFit Protocol

Release suboccipitals and upper trapezius. Activate deep cervical flexors with chin tuck progressions. Correct thoracic extension to remove the upstream drive of forward head posture.

The Corrective Bridge

Between discharge and high performance is a gap most people fall into.

Physical therapy gets you out of acute pain. General fitness training loads the tissue before it's ready. The Corrective Bridge is what connects them — and it's where RxFit operates.

// Phase 01
Physical Therapy
Acute pain management, post-surgical rehab, diagnostic imaging. Goal: Get you out of acute distress. Outcome: Functional enough to be discharged.
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// Phase 02 · RxFit
The Corrective Bridge
Kinetic chain reassessment, neuromuscular re-education, progressive tissue loading. Goal: Build a pain-free movement foundation. Outcome: Ready for performance.
→
// Phase 03
High Performance
Strength periodization, metabolic conditioning, longevity protocols. Goal: Compound performance over decades. Outcome: Biological age reduction.

Why most people re-injure themselves

After PT discharge, patients return to the exact gym patterns that caused their injury in the first place — because the underlying movement dysfunction was never retrained, only rested. Loading dysfunctional tissue under progressive overload is not rehab. It's a reinjury waiting to happen.

What the Corrective Bridge actually builds

Neuromuscular efficiency — the ability of your nervous system to recruit the right muscles, at the right time, in the right sequence. This is the foundation that must precede any strength, conditioning, or performance training. Without it, load becomes liability.

The clinical crossover advantage

Danny's NASM-CES certification, combined with a microbiology background, means RxFit operates at the intersection of clinical rehabilitation and performance training — a combination rarely available outside hospital systems, and never delivered to your home in Austin.

Mobile delivery. Your home. Your schedule.

Every corrective session happens in your environment — where your movement patterns actually live. We assess how you sit, stand, and move in your home office, then correct the patterns driving your pain in the exact context where they occur.

The Protocol

How RxFit resolves chronic lower back pain.

A systematic four-step corrective process — from assessment to loaded movement — that eliminates the root cause rather than managing the symptom.

01
// Movement Assessment

Map the Kinetic Chain Failure

The first session is a comprehensive movement assessment using the NASM Overhead Squat Assessment, Single-Leg Squat, and gait analysis. We identify the specific muscle imbalances — overactive hip flexors, inhibited glutes, restricted thoracic extension — driving your lower back pain. No guessing. No generic protocol. A precise dysfunction map built for your body.

02
// Inhibit & Lengthen

Release Overactive Tissue

Before we activate anything, we release what's locked. Overactive hip flexors, QL, and thoracolumbar fascia are addressed with targeted foam rolling (SMR), PNF stretching, and myofascial release techniques. This phase down-regulates the chronically shortened tissue that's been pulling your pelvis out of alignment. Skipping this step is why most corrective programs fail — they strengthen on top of dysfunction.

03
// Activate & Integrate

Wake Up the Underactive Stabilizers

With the overactive tissue released, we activate the inhibited muscles responsible for lumbar stability: the deep core (transverse abdominis, multifidus), glutes, and hip abductors. This is neuromuscular re-education — teaching the nervous system to fire the correct muscles in the correct sequence. Isolated activation is followed by integrated movement patterns that wire these muscles into functional use.

04
// Progressive Loading

Load the Corrected Pattern Under Progressive Overload

Only once the movement pattern is corrected do we introduce load. Hip-dominant exercises — Romanian deadlifts, single-leg variations, and loaded carries — are progressively introduced to build the mechanical resilience required for a pain-free life and long-term performance. This is where corrective work becomes longevity training. The tissue is finally ready to be built.

Client Results

What Austin executives say.

★★★★★

"Danny is an incredibly knowledgeable and professional trainer. He really takes the time to assess what areas need work and designs programming that addresses my specific imbalances. My chronic back pain that I'd been dealing with for years has significantly improved since working with RxFit. I can't recommend him enough."

IB
Irene Bogardus
Executive Client · Austin, TX
★★★★★

"I came to Danny after years of shoulder pain that no one could resolve. Within a few months of corrective work, I was doing things I hadn't been able to do in a decade. He understands the body in a way that goes beyond fitness — it's biology-backed. He genuinely cares about fixing the root problem, not just managing pain."

BC
Barb Creed
Long-Term Client · Austin, TX
Zero-Risk Entry Point

Your movement audit.
Complimentary. At your home.

Thirty minutes. Danny comes to you — in Westlake, Tarrytown, or Downtown Austin. He'll map your movement, identify your kinetic chain failures, and show you exactly what's driving your pain. No sales pressure. Clinical-grade diagnostic value, delivered to your door.

Book A Complimentary Assessment →
(512) 645-0050 · Serving Westlake · Tarrytown · Downtown · Zilker · Bee Cave