Testimonials
Trusted by clients worldwide, delivering quality service every time.
Trusted by the
Wordl's Elite
Clients share their experiences with David Buer’s System X coaching — reporting breakthroughs in health, performance, recovery, resilience, and leadership.
“System X helped me recover from a potentially career-ending injury and propelled me back to elite levels of performance — both on the field and in the ring. It completely transformed my mindset and drive to succeed.”
Elijah Holyfield
WWE Star & Former NFL Running Back
“During my playing career, System X helped me lead the league in home runs while keeping me performing at elite levels. Today, it continues to rehabilitate and upgrade my body from years in the league, while enhancing every aspect of daily life.”
Ryan Howard
MLB MVP, Champion and Entrepreneur
“System X not only prepared me for the physical demands of playing Superman but also eliminated the chronic aches and pains from my college baseball days. It’s been a game-changer for both my career and daily life.”
Tyler Hoechlin
Actor/Writer/Producer
David Buer prepared me for the demands of a major movie role while elevating my energy, well-being, and overall quality of life. It gave me the clarity and resilience to perform at my best on and off set.”
Tyler Perry
Director/Actor/Producer
“David Buer enhanced my productivity and health, and we’ve integrated his methodologies into Sharecare to bring its benefits to millions. It’s a framework for sustained energy, focus, and performance.”
Jeff Arnold
Founder of WebMD, Sharecare and Forbes Travel Guide
“System X helped me recover from a career-threatening injury and return stronger than ever. It optimized my performance, resilience, and longevity as a professional athlete.”
Dwight Howard
NBA All-Star
“After facing a significant career-threatening injury, System X was the key to my recovery and return to the court. It gave me the resilience, focus, and confidence to perform at the highest level again.”
Temi Fagbenle
WNBA Champion & Olympian
“System X rehabilitated injuries from my college career and prepared me for another run at the NFL. It elevated my performance to new heights and gave me a competitive edge I didn’t think was possible.”
Aaron Murry
ESPN Analyst | Former UGA & NFL QB
“System X gave me the tools to maximize performance, resilience, and clarity — not only as a Ranger but also in the business world. It’s about thriving under pressure in every arena of life.”
Danny Rohe
Army Ranger & Business Leader