Behind the Brand
FOUNDER & CEO
For more than 40 years, Greg Johnstone has been a trusted leader in fitness, health, and nutrition. As one of the world’s top training and nutrition specialists, Greg combines decades of professional education in science, anatomy, kinesiology, integrated health, hormone therapy, and peptide therapy with hands-on coaching experience.
Over his career, Greg has helped thousands of men, women, and youth achieve healthier, stronger, and more fulfilling lives through proper exercise, balanced nutrition, and sustainable lifestyle habits. Widely recognized as a true fitness authority, he has earned the reputation of being a “guru” in all aspects of health, wellness, and performance optimization.
Greg’s passion and impact have been honored by the National Fitness Hall of Fame, where he was celebrated for his outstanding career and lifelong commitment to helping others “Get Fit & Stay Healthy.” His ability to educate, inspire, and motivate has set him apart as one of America’s elite master trainers and nutrition experts.
Beyond coaching, Greg is also an accomplished competitor. As an IFBB PRO Greg has been an accomplished competitor since the age of 22 he has competed in bodybuilding and presently continues to excel as a masters IFBB PRO Masters Men’s Physique champion proving that age is no barrier to performance and excellence
Certifications & Accreditations
- National Fitness Hall of Fame – Certified Fitness Expert (NFHOF-CFE)
- Professional Master Elite Trainer & Nutrition Expert
- American Fitness Institute (AFI) – Nutrition Specialist & Life Coach
- CPR / AED / First Aid Certified
Dr. Jill
The Doctor
After earning her Doctor of Pharmacy from the University of Oklahoma Health Sciences Center, Dr. Jill White spent years in traditional practice—watching patients grow sicker despite more medications. She began to question whether the healthcare system was truly helping people live better.
Then came a turning point. As she cared for her father during his battle with cancer, her own health began to suffer. His passing was a wake-up call that changed everything. She saw firsthand the toll that chronic illness—and the environment around us—can take on a body that isn’t supported holistically.
Hormone Optimization:
- Growth hormone deficiency assessment and treatment
- Peptide therapy protocols (Sermorelin, GLP-1 agonists)
- Comprehensive hormone panel interpretation
- Bioidentical hormone replacement therapy
Metabolic Medicine:
- Advanced diabetes and prediabetes management
- GLP-1 and dual agonist therapy protocols
- Weight management optimization
- Insulin resistance reversal protocols
Transform Your Health with FITLIFE Advantage™
By combining Greg’s decades of expertise in fitness and nutrition with the science of clinical peptide health, we deliver a results-driven approach designed to help you unlock your full potential. Our mission is simple: to help you achieve maximum results in less time — and become the strongest, healthiest version of yourself. Today is the day to begin that next chapter, and you don’t have to do it alone — we’re here every step of the way.
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Real People. Real Results
At FITLIFE, it’s not about quick fixes or gimmicks—it’s about real people achieving real, lasting results. Our members aren’t actors or fitness models; they’re parents, professionals, and everyday people who decided to take control of their health. With the right guidance, tools, and support, they’ve built strength, lost weight, gained confidence, and transformed their lives—proving that with commitment and the right program, anyone can reach their goals.
