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Earth City, MO  ·  Est. 2013  ·  Pro-Level Results

Get Your
Flex On.

Transform your body, mind, and lifestyle with Coach Kenny — Pro Natural Bodybuilder, Exercise Science expert, and the coach who turns ordinary people into competition-ready champions.

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10+
Years Coaching
100s
Lives Transformed
Pro
Natural Bodybuilder
M.Ed
Masters Education
B.S.
Exercise Science
The Road To The Stage
$65

📘 Now Available

The Road To The Stage
Training Program

Coach Kenny's complete full-body competition training program — 6-day split, approved food list, workout trackers, client measurements chart, and more. The exact system that built champions.

✓ 6-Day Split ✓ Food List ✓ Workout Tracker ✓ Supersets & Tri-Sets
🏆 GET THE PROGRAM — $65

Instant PDF download · One-time payment · Built by a Pro Natural Bodybuilder

B.S. Exercise Science
Masters in Education
Former Pro Football Player
Pro Natural Bodybuilder
Competition Prep Coach
Est. 2013
Coach Kenny Sims — International Pro Elite Bodybuilder
🏆 International Pro Elite World Championships

MeetCoach Kenny

Kenny Sims is the founder of Flex Training LLC and The Flex Facility — a premier training destination in Earth City, MO. With a Bachelor's in Exercise Science and a Master's in Education, Kenny combines academic expertise with real-world elite athletic experience.

A Former Pro Football Player and Pro Natural Bodybuilder, Coach Kenny has walked the walk at the highest level. His clients don't just get fit — they win competitions, reclaim their confidence, and transform their entire lifestyle.

Whether you're an elite athlete or just starting your journey, Coach Kenny meets you where you are — and takes you further than you thought possible.

Pro Natural Bodybuilder Former Pro Football B.S. Exercise Science M.Ed Education Competition Prep Nutrition Coach

Real Results

These aren't stock photos. These are real Flex Facility clients who committed and won.

Client transformation - competition stage
⭐ Competition Ready
Client transformation - bodybuilding champion
🏆 State Champion
Client transformation - USBF Midwest Classic
🥇 USBF Midwest Classic
Client body transformation
🔥 Body Recomposition
Client transformation at Flex Facility
✅ Flex Facility Results
Flex Spotlight transformation 182 to 168 lbs
🌟 Flex Spotlight — 182 → 168 lbs

See The Flex Facility

Watch Coach Kenny in action — this is what real coaching looks like.

📍 The Flex Facility · @theflexfacilitystl

💪 Coach Kenny · @flextraining2013

What Clients Say

Real words from real people who made the decision to Get Their Flex On.

★★★★★
"Kenny helped me find a version of myself I thought I had lost. I'm stronger, leaner, and more confident than ever. Best investment I've ever made."
Aaron B.
Personal Training Client
★★★★★
"I never thought I'd compete in a bodybuilding show. Coach Kenny not only believed in me — he built me a plan that took me all the way to the stage. I placed first."
Deja M.
Competition Prep · 1st Place Bikini
★★★★★
"The nutrition plan alone changed everything. Coach Kenny teaches you how your body actually works. I dropped 14 lbs in 10 weeks and I wasn't starving once."
Marcus T.
182 → 168 lbs · Nutrition + Training
★★★★★
"As a former athlete, I needed someone who understood performance at an elite level. Coach Kenny is that guy. My speed and strength improved dramatically in 8 weeks."
Terrence W.
Sports Performance · Football
★★★★★
"I'm 58 years old and I feel like I'm 35 again. Coach Kenny adapted everything for my limits — and then pushed me past them in the best way possible."
Sandra P.
Senior Fitness Client · 6 Month Journey
★★★★★
"Virtual training with Coach Kenny is just as intense as in-person. He checks in constantly, adjusts weekly, and genuinely cares about your results."
Rashida K.
Virtual Training · Lost 31 lbs

Our Programs

Every program is built from scratch. No templates. No cookie-cutter plans.

🏋️

Personal Training

One-on-one in-person or virtual coaching with fully custom training programs built around your goals and lifestyle.

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Competition Prep

Stage-ready physique coaching for bodybuilding, bikini, and physique competitions. Coach Kenny has taken clients all the way to first place.

⚡

Sports Performance

Elite-level athletic training for individual athletes — speed, strength, agility, and power. From high school to pro level.

🥗

Nutrition & Meal Plans

Custom meal plans designed to fuel your training, accelerate fat loss, and optimize muscle growth — science-backed, not generic.

📱 Now On Mobile

Download The Flex Facility App

Access your workouts, track progress, and stay connected with Coach Kenny — all from your phone. Available on iOS and Android.

Download on the
App Store
Get it on
Google Play

⚡ Free to download · Available on iOS & Android

Follow The Journey

Daily motivation, client wins, and transformation content. Come get your daily dose of Flex.

Stop Waiting.
Start Winning.

Every champion in those transformation photos made one decision — they said yes. Our AI books your consultation instantly. No waiting, no back-and-forth. Spots are limited.

📍 4132 Shore Line Dr, Earth City, MO 63045  ·  (314) 910-2203

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