About Marvin
The Coach Behind The Fat Killer
Known throughout the community as The Fat Killer, Coach Marvin has more than 20 years of professional experience helping people improve their health, fitness, confidence, and performance.
Marvin Williams began his fitness journey through bodybuilding in 1998. What started as a personal passion for training eventually became a career dedicated to helping other people improve their lives through fitness.
Based in Madison, Mississippi, Marvin leads The Fat Killer coaching team and the Total Fitness Solution personal training program at Next Generation Health & Fitness.
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A Career Built Through Coaching, Competition, And Community
Marvin's background spans bodybuilding, personal training, youth fitness, boxing, mixed martial arts, athlete development, weight loss, and long-term client coaching.
More Than One Type Of Coach
Marvin's coaching experience extends beyond traditional personal training. He has served as an AmeriCorps member, worked with the nonprofit organization Playworks as a Recess Coach, earned Green Level Coach certification through USA Boxing, and has experience as a mixed martial arts instructor.
He has trained clients of all ages and backgrounds, including youth clients, adults, older adults, athletes, physique competitors, and people simply working to become healthier and more confident.
Coaching That Goes Beyond The Gym Floor
Marvin's work has included youth coaching, nonprofit service, sports instruction, and community-based fitness. His experience with Playworks, AmeriCorps, boxing, and youth fitness reflects a coaching career built around more than sets and reps.
Whether working with children, adults, athletes, or older clients, Marvin's passion for training remains the same: helping people improve, stay consistent, and become more confident in what they can do.
Bodybuilding Built The Foundation
Marvin was inspired by bodybuilding as a kid and went on to compete for more than two decades. His competitive career included winning the River City Classic Bodybuilding Championship in 2006 and the Mississippi State Bodybuilding Championship in 2016.
That competitive background helped shape Marvin's understanding of discipline, consistency, training intensity, and the long-term commitment required to create meaningful physical change.
- River City Classic Bodybuilding Champion — 2006
- Mississippi State Bodybuilding Champion — 2016
- Competitive bodybuilding career from 1998 through 2019
A Lifetime In Health And Fitness
Marvin's background includes certifications and professional development through SilverSneakers, ISSA, AFAA, USA Boxing, and years of hands-on coaching experience.
Fitness Is More Than A Profession
Today, Marvin continues to help clients of all ages and experience levels improve their health, fitness, confidence, and performance.
Through The Fat Killer and the Total Fitness Solution, Marvin helps clients in Madison, Mississippi and the surrounding area build consistency, accountability, and lasting results.
For Marvin, fitness is more than a profession. It is a lifelong passion.
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