STL Athlete Lab at STL Turf Box

Train with
Purpose.

Strength, speed, and durability — built for athletes in any sport, and a private space for trainers to bring their own clients.

What We Focus On

Built Around
Your Performance.

Speed & Agility Development

Improve your first step, change-of-direction speed, and acceleration mechanics with programming designed for game-speed movement.

Strength Training

Build a resilient, powerful foundation. Evidence-based strength programming tailored to your sport, body, and long-term goals.

Movement Quality

Develop the mobility, stability, and movement patterns that keep you healthy, reduce injury risk, and make every rep more effective.

Strength & Conditioning for Every Sport

Football, baseball, basketball, soccer, hockey, volleyball, lacrosse, and more — programming built around the demands of your specific sport, whatever it is.

Nick JenneweinHead Coach, STL Athlete Lab

Meet the Coach

Nick
Jennewein.

With over 10 years of coaching experience and a USA Weightlifting Level 1 certification, Nick specializes in turning potential into performance. Training out of STL Turf Box, he focuses on the science of speed, power, and durability.

His evidence-based approach doesn't just make athletes stronger — it builds people who move better, perform better, and stay resilient for the long run.

Every program Nick creates is personalized to the individual. Whether the goal is athletic performance, building muscle, increasing strength, preventing injuries, or creating a sustainable routine — each plan is designed specifically for the client's goals, lifestyle, and ability level.

Work With Nick

Are You a Personal Trainer?

Bring Your
Own Clients.

Private, Distraction-Free Space

Rent the entire 75x75 ft turf facility for your own personal training sessions. No shared space, no other trainers or clients in the building during your time.

Bring Your Own Programming

This is your session, your client, your plan. STL Turf Box simply provides the space — equipment, sleds, turf, and room to coach your way.

Flexible Booking

Book a single session or set up a recurring weekly slot for your training business. Indoor, climate-controlled, and available year-round regardless of weather.

Any Sport, Any Client

Whether you train athletes, general fitness clients, or sport-specific strength & conditioning, our open turf and equipment work for any training style.

Book the Space

10+Years Coaching

L1USA Weightlifting Cert.

MultiSport Backgrounds

1:1Personalized Programs

The Lacrosse Edge

A True
Student of
the Game.

Current Varsity Head Coach at Rockwood Summit, and coach with Lou Fusz Athletics. Nick brings elite-level lacrosse IQ to every training session.

Specializing in offensive mindset, driving mechanics, and 1:1 tactical development — with experience coaching football, baseball, basketball, soccer, track & field, and athletes from nearly every sport.

Inquire About Training

Get In Touch

Ready to
Level Up?

Whether you're an athlete looking for an edge or ready to invest in your strength and health — reach out and we'll put together a program built around you.

EmailSTLturfbox@gmail.com

Phone(314) 626-4732

Location928 Benton Street, Valley Park, MO 63088

Start Your Program

Send us a message with your name, sport, and what you're looking to work on. Nick will follow up within 48 hours to discuss a personalized plan.

Send a Message

Train withPurpose.

Built AroundYour Performance.