About Functional Fitness USA
Birthplace of Fitness Longevity®
Who We Are
Functional Fitness is a family-owned and operated fitness center specializing in corrective, functional exercises for all age groups, shapes, and sizes. Many of our clients have felt like they never fit in to the large, corporate gym environment. We are small, specific, and individualized.
Our goal is to meet the needs of our clients by teaching them how to maintain a healthy fitness level over the course of their lives. We take a personalized approach to help you achieve long-term wellness and vitality.
Meet With Us15+ Years
Serving Boulder community
500+ Clients
Success stories
60,000+ Hours
Training experience
Our Approach
- ✓Individualized functional analysis
- ✓Identify poor movement patterns
- ✓Correct muscle imbalances
- ✓Improve quality of life
- ✓Prevent future injuries
What We Do
We create a personalized plan to improve how YOU move. We do this by performing an individualized functional analysis that identifies poor movement patterns. Over time these patterns lead to muscle imbalance, tension, and joint pain.
If we can align your body and help you move correctly with ease, you will increase your quality of life and better avoid injury. Our approach addresses the root cause, not just the symptoms.
Functional Fitness Experts
Licensed specialists providing comprehensive therapeutic care

Sam Iannetta
Owner & Personal Trainer
NASM ACPT, Accredited Fitness Therapist
Sam originated the functional fitness analysis system with over 60,000 hours of personal training experience and three decades of expertise. Former American powerlifting record holder and founder of the Functional Fitness philosophy.
Specialties:

Colleen Wilson
Personal Trainer
PMA Gold Certified, PTA-Global Advanced
35 years teaching experience specializing in mature adults, foot health, and full-body core training. Featured in books, magazines, and videos.
Specialties:

Heber Howard
Personal Trainer
NASM CPT, Corrective Exercise Specialist
Graduate of Naropa University with B.A. in Contemplative Psychology. Passionate about helping clients develop appreciation for movement and build lasting fitness habits.
Specialties:

Jason Schuebel
Personal Trainer
Certified Personal Trainer
Dedicated to understanding how the body functions to optimize performance. Specializes in pain management, injury recovery, muscle building, and fitness maintenance.
Specialties:

Kaitie Davis
Massage Therapist & Personal Trainer
LMT, CPT
Combines massage therapy and personal training to eliminate pain by increasing strength and mobility in the right muscles for each client.
Specialties:

Will LeBoeuf
Personal Trainer
CU Boulder Graduate, CrossFit Certified
Strength and conditioning coach with expertise in bio-mechanically sound Olympic lifting. Determined to promote safe, effective strength training practices.
Specialties:
Physical Therapists & Bodywork Specialists
Licensed specialists providing comprehensive therapeutic care

Cara Weisbach
Physical Therapist
PT, Postpartum Specialist
Physical therapist with 10+ years experience in spinal cord and brain injury rehabilitation. Holistic approach combining breathing strategies, manual therapy, and neuro-integrative techniques.
Specialties:

Kasey O'Leary
Physical Therapist & Functional Medicine Health Coach
Stanford Educated, Certified Functional Medicine Health Coach
Stanford educated physical therapist with 25+ years clinical experience. Combines sports/orthopedic PT with functional medicine health coaching for comprehensive wellness.
Specialties:
Sandy Bertrand
Physical Therapist
Orthopedic Physical Therapist
Orthopedic physical therapist specializing in manual therapy, bio-mechanical analysis, movement retraining, integrative bio-medical needling and FMS corrective therapy.
Specialties:
The Functional Fitness Philosophy

Personalized
No one-size-fits-all programs. Every client receives a customized plan tailored to their unique needs, goals, and movement patterns.

Evidence-Based
Our methods are grounded in biomechanics, functional movement science, and decades of practical experience with thousands of clients.

Boulder-Born
Created and perfected in Boulder, Colorado. We understand the active lifestyle and outdoor pursuits that make this community special.

Long-Term Results
We don't just fix today's problem. We teach you how to maintain health and fitness for life, creating true Fitness Longevity®.
Ready to Experience the Difference?
Join the Functional Fitness family and discover what personalized, expert training can do for you.