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Business Details
18 Years
experience
Transform Your Health with Personalized Fitness Training
At Fitness 621, we are dedicated to transforming lives through personalized health, fitness, and nutrition coaching. Founded in 2008, our private training gym in Lawrenceville, GA, specializes in body recomposition, strength and endurance training, and law enforcement/military preparation. With over 16 years of experience, our certified trainer combines expertise in personal training, fitness nutrition, and CPR to guide clients toward achievable goals. We prioritize mindset shifts, accountability, and tailored programs to help individuals overcome physical limitations. Our services include InBody composition analysis, customized nutrition plans, and targeted training regimens.

Recognized as Best of Gwinnett for six consecutive years, we focus on fostering long-term wellness and athletic performance. By integrating science-based methodologies and compassionate support, we empower clients to achieve sustainable results. Our commitment extends beyond the gym, emphasizing holistic well-being and community impact. Whether you're starting your fitness journey or preparing for a career in law enforcement, we provide the tools and expertise to succeed. Trust in our proven track record to elevate your health and fitness potential.
Services
Body Recomposition Nutrition Coaching Strength Training Endurance Development Law Enforcement Prep
Details
  • Year established: 2008
Highlights and features
  • We offer 16 years of experience in personalized fitness coaching.
  • Our trainer holds ISSA certifications in personal training and nutrition.
  • Specialized programs for law enforcement and military physical preparation.
  • InBody 270 technology for precise body composition analysis.
  • Proven track record with 6 consecutive Best of Gwinnett awards.
Associations and certifications
  • ISSA
  • CPR Certified
Services
Body Recomposition
Body recomposition focuses on simultaneous fat loss and muscle gain. This science-based approach improves metabolism, strength, and overall body composition through tailored exercise and nutrition plans. Clients receive ongoing progress tracking and adjustments to optimize results.
Nutrition Coaching
Personalized nutrition guidance complements fitness goals. Certified coaches develop meal plans to support training outcomes, addressing individual dietary needs while promoting sustainable healthy eating habits for long-term success.
Strength Training
Customized strength programs enhance muscular development and functional capacity. Using progressive overload principles, sessions improve physical performance while reducing injury risk through proper form instruction and load management.
Law Enforcement Prep
Specialized training prepares candidates for law enforcement physical demands. Programs develop tactical strength, endurance, and fine motor skills required for academy success and field performance through scenario-based conditioning.
InBody Analysis
InBody 270 technology provides detailed body composition metrics. This non-invasive 15-second assessment tracks lean mass distribution, body fat percentage, and muscle development to guide data-driven fitness and nutrition decisions.
People
John St. Luce
Owner/Trainer
Certified ISSA trainer with 16 years of experience specializing in weight loss, body recomposition, and law enforcement preparation. Holds fitness nutrition and CPR certifications. Committed to personalized client transformation through science-based methodologies.
Questions
What services does Fitness 621 offer?
We provide body recomposition, strength training, nutrition coaching, InBody analysis, and law enforcement/military preparation programs.
Are trainers certified?
Our lead trainer holds ISSA personal training and nutrition certifications, plus CPR certification.
Do you offer free consultations?
Yes, we provide free initial consultations to discuss your fitness goals and create personalized plans.
What areas do you serve?
Primarily serving Lawrenceville, GA, with select online coaching options available for remote clients.
How long are training sessions?
Session durations vary from 45-60 minutes based on individual program requirements and scheduling availability.