Jack Kirven was born in Atlanta, GA and grew up in Augusta. He has always been athletic. Jack started competitive gymnastics at seven, adding ballet at twelve, and then pursuing Dance, Personal Training and Athletic Conditioning as a career. He is from an eclectic family of artists, scholars, scientists, and entrepreneurs. As a result, Jack has always explored broadly to understand how everything is interconnected. These collective experiences deeply shaped his wellness philosophy, and he helps his clients understand how and why each choice they make affects their health. In 2002 he earned both a PhD in Choreography from UCLA, and also the NASM CPT certification. He is currently certified through ISSA. For several years Jack was a high school teacher and university professor for Dance, Choreography, and Fitness. He also writes the Health & Wellness column for local newspaper.


Jack has a keen eye for efficient movement technique and proper anatomical alignment, and is particularly fond of calisthenics, free weights, and athletic conditioning. He has performed, choreographed, taught, and trained across the United States and Europe. While seeking new opportunities to train, Jack found Flex5 by way of a search for holistic wellness. He was immediately excited to find a group of like-minded professionals and joined the team in December 2016 to help empowering clients to #BeTheChange.


Jack reminds clients that there are no mysteries, short cuts, or easy fixes. It took time and habit to create one lifestyle. It will take time and discipline to adjust progressionally toward new choices. With that in mind, Jack focuses on the fundamentals while remaining encouraging and motivating. He believes strongly in journaling as a means of following progress toward long term goals, because the process is as important as the result. Jack finds that being generous with information helps clients to maintain their gains, by allowing them to understand how to implement their healthy lifestyles for years to come. He encourages clients to focus on goals, effort, and determination, not gimmicks, pills, or fads. 



“Jack’s dedication to his own development is inspirational. What surprised me was how that enthusiasm caught on with me too!” ~ Adam H., Louisville


“Jack is very knowledgeable and inspiring. He helps set clear and attainable goals. If you want to learn how to develop great nutrition habits and a great exercise regimen then he is the guy to go to. You will see amazing results.”

— Allen D., Charlotte


“Hire Jack! He is extremely knowledgeable about kinesiology, nutrition, and fitness. He is so much fun! He will get you motivated to make the changes you want to make.”

— Annie V., Charlotte


“Jack is the Alton Brown of exercise. You know, the chef that not only tells you tips and tricks of cooking, but WHY they work - the science behind it all. In my time working with him I was equipped with the knowledge to achieve my goals and maintain them. Proper technique in the gym and proper nutrition in the kitchen are the basics to Jack’s goal of helping you live your best life. I am a better and healthier person because of his coaching. Your life will be better for it!”

— Clay S., New York City


“I’ve had intense pain from Fibromyalgia for years, and it made it impossible to even get out of bed some days. Jack taught me stretches to help me on the days when that’s all I can do. But he also taught me how to make progress with strength, cardio, and diet. He showed me how to get up and down stairs without hurting my joints, and now I can go months without needing pain medicine. This is definitely a system that can accommodate you at whatever level you’re at. People who are out of shape or have other limitations can really benefit from this style of gradual training. ”

— David A., Philadelphia


“It’s a struggle to lose weight. Jack’s approach is a complete program. It’s more than just counting calories, it’s a lifestyle. Jack kept me honest, especially when I wanted to give up and/or cheat. I recommend him to all my friends.”

— Sanna C., New Orleans


“Jack knows more about nutrition, fitness, and total wellness than anyone I’ve ever met. His coaching doesn’t just change your health - it changes your life. If you’re looking for a wellness coach, look no further. His services are hands down worth every penny.”

— Valerie R., Greenville


All-Inclusive Holistic Fitness & Wellness Center in Uptown Charlotte.
Address :
428 E 4th Street, Suite 333, Charlottel, NC 28202 Email : href="mailto:info@flex5clt.com">info@flex5clt.com