About Human Function & Performance
Understand the Body. Restore Function. Unlock Performance.
Human Function & Performance was built around a simple idea: to improve how you feel, move, and perform, you first have to understand how your body functions as a whole.
Why Human Function & Performance Exists
Why Human Function & Performance Exists
Your body doesn’t function in isolated parts — and your health and performance shouldn’t be approached that way.
Pain, movement, strength, recovery, stress, nutrition, and overall health are interconnected. A limitation in one area can influence how you feel and perform somewhere else.
Human Function & Performance was created to look beyond individual symptoms and understand the bigger picture. Instead of asking only “Where does it hurt?”, we also ask “What is limiting how you function?”
By understanding how your body moves, recovers, adapts, and performs, we can identify where your time and effort can have the greatest impact — whether your goal is to get out of pain, return to an activity, improve performance, or stay strong and capable for life.
The goal isn't simply to treat a problem. It's to improve human function.
UNLOCKED Move
I have dedicated my life’s purpose to help motivated people like yourself redefine human function and performance. It is my personal mission to help athletes, business professionals, and entrepreneurs understand how their body works and will serve them best.
Having a background working in the collegiate and professional sports setting I was able to obtain better strategies to help clients address pain quicker and improve limited movement in a shorter period of time. In addition I have also acquired specialized training working with the spine to help with common setbacks in life such as low back and neck pain.
At Human Function and Performance we have created an environment where patients get better faster and achieve lasting improvements, all with less time spent in the clinic and more time performing the activities they love.
TRAINING & MENTORSHIP
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Bachelor of Science in Kinesiology, Angelo State University 2004
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Master of Physical Therapy & Athletic Training, Texas Tech University 2008
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University of Texas at Austin Strength & Conditioning Internship 2008
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NFL - Jacksonville Jaguars Seasonal Internship 2009
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USL Pro Soccer - Los Angeles Blues Soccer Athletic Training 2010
Your Therapist.
Sheldon Sonnenberg is a healthcare entrepreneur, investor, and performance physical therapist with over 19 years of experience as a Board Certified Physical Therapist and Athletic Trainer.
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He is the founder of a multi-vertical Performance Healthcare platform that integrates:
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Performance Physical Therapy
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Performance Training
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Performance Biohacking & Recovery
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Performance Healthcare Acquisitions
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His work centers around optimizing human function, improving performance, and building scalable healthcare businesses that deliver both clinical outcomes and enterprise value.
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Clinically, Sheldon has worked across all levels of sport—including NFL, professional soccer, NCAA, and high school athletics—while developing a systems-based approach that focuses on:
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Root-cause dysfunction
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Movement efficiency
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Nervous system regulation
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Long-term performance and longevity
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Beyond clinical practice, Sheldon has built and supported multiple outpatient physical therapy practices across both insurance-based and cash-pay models. His approach bridges the gap between clinical excellence and business scalability, helping founders move from operator to owner.
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Through UNLOCKED Acquisitions and his broader ecosystem, he focuses on acquiring and scaling businesses within the Performance Healthcare space—including physical therapy, chiropractic, and recovery-focused companies. By implementing MSO structures, operational systems, and growth strategies, he positions businesses to increase profitability, expand strategically, and become exit-ready.
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Sheldon takes a direct, outcome-driven approach—aligning strategy with long-term vision while considering both internal performance and external market dynamics. He believes that healthcare should evolve from a reactive model to a proactive, performance-driven system that not only generates financial returns but also meaningfully improves the way people move, perform, and live.
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His mission is to simplify the path from passion to scalable success—so that founders can grow without burnout and build businesses that create lasting impact on human health and performance.
Education
2007-2008
Degree - Athletic Training
University Name - Texas Tech
Masters of Athletic Training
2004-2007
Degree - Physical Therapy
University Name - Texas Tech
Masters of Physical Therapy
2001-2004
Degree - Kinesiology
University Name - Angelo State
Bachelor of Science - Kinesiology
Jacksonville Jaguars 2010
Los Angeles Blues USL Pro Soccer
Growth
Mindset
Coach "Maddog" Madden
Jeff Madden
From nationally recognized strength and conditioning coach to President of the Collegiate Strength and Conditioning Coaches Association, Coach Madden has gained significant recognition as a coach and leader. In 2022 Coach Madden was inducted as a Legend in the Field of Strength and Conditioning.
