Personal Trainers:

Helios Walker
Mystic Fitness
  • Certified Personal Trainer
  • Group Yoga Instructor
  • Kickboxing Instructor
Josh Seiler
Final Move Fitness
  • AMFPT Certified
  • US Army
  • Strength and Conditioning
  • Rehab and Prevention
  • Lifestyle Coaching
  • Nutritional Guidance
  • Mindfulness and Stress Relief


Lisa Carma
Carma Fitness
  • Personal Trainer
  • CPR/AED Certified
Jamie Kempfer
Rocky Mountain Flex Fitness
  • Strength Training
  • Weight Loss
  • Post Injury Rehab
  • HIIT Class
Nick Riggin
Max Power Performance
  • Correct Exercise
  • Sports Conditioning
  • Muscular Enhancement
Sara Camiscioni

Find Your Strong with Sara

  • Certified Personal Trainer
  • 200 Hour Yoga Alliance
  • Precision Nutrition Coach, PN-1
Willis Small
Rocky Mountain Flex Fitness
  • 2012 GNC 2nd Place
  • 2013 Mile-High 1st Place Masters
  • 2013 Mile-High 1st Place Open Class Overall Masters
Daniella Maldonado
Rocky Mountain Flex Fitness
  • Diet and Nutrition Coaching
  • Body Transformation/ Weight Loss
Joey “Teardrops”
Rocky Mountain Flex Fitness
  • Strength and Conditioning
  • Functional Training
  • Wrestling
  • Brazilian Jiu-Jitsu
  • Boxing
  • Muay Thai Kickboxing
  • Body Sculpting
  • Weight Loss
Charis Cook
  • ACE Certified Personal Trainer
  • Russian Kettle bell Certified (RKC)
  • Hardstyle Kettle bell Certified (HKC)
  • BASI Comprehensive Pilates Certified
  • Functional Movement Screen Level 2 Certified
  • TRX Suspension Trainer, Group and Personal Qualified
  • SMRT-Core The Grid Certified
Brian Handlos
  • Certified Personal Trainer
  • Group Training
  • Cardio Kickboxing Coach
  • First Aid/AED Certified

Class Instructors:

Daniella Maldonado
Rocky Mountain Flex Fitness
  • Class Instructor
  • HIIT / Bootcamp
Joey Gutierrez
Rocky Mountain Flex Fitness
  • Class Instructor
  • Tactical Combat
Cisco “The Mule”
Rocky Mountain Flex Fitness
  • Class Instructor
  • Intro to Striking
Brittany Hughes
Rocky Mountain Flex Fitness
  • Class Instructor
  • Shadow Boxing
Jamie Kuttenkuler
Rocky Mountain Flex Fitness
  • Class Instructor
  • Yoga

Nicholas Natt, Co-owner and Master Trainer

Current Master trainer and NPC National Level

Physique Athlete. Alongside Nick’s current status,

Nicholas Natt has been featured in Muscle & Fitness, The Denver Post,
National Physique Committee, and Flex Magazine. Nick also represents
Myprotein, Europe’s number one online sports
nutrition company, as a sponsored athlete.
“The Eclectic fitness disciplines that I have had the privilege
of studying and using over the years drive the approach
that Rocky Mountain Flex Fitness (RMFF) will emphasize.
You will find that all your needs will be met
whatever your health goal or vision for a fit lifestyle
at RMFF, Welcome!”


  • Over 11 Fitness Certifications
  • Sports Nutrition Certified
  • Organic Nutrition Certified
  • Fitness Model (Represented by Silver Model Management)

Christopher Lane, Co-owner

I have always been a fitness enthusiast. Growing up in Michigan I spent my weekends skiing in the winter and mountain biking in the summer. When I was too tired to ski or bike I was sailing on Lake Michigan or camping.

My love for the outdoors inspired me to attend the University of Denver for my undergraduate and masters degrees. Upon moving to Colorado in 2004 I have continue to ski regularly and enjoy the outdoor wonders Colorado has to offer.

If you are looking to get in shape for the bumps this winter, climb that fourteener or chase your kids around the backyard, Rocky Mountain Flex Fitness is the place for you.

See the Vision

Rocky Mountain Flex Fitness was started in November of 2015 with 2 guys and a shared dream to change the way people see fitness, and offer the solution to the most difficult, frequent, challenging, and interesting questions people have about how to become healthy and fit.

We have a passion for helping all people achieve their goals, whatever they may be, and are uniquely qualified with knowledge in over 20 different health and

lifestyle disciplines. We believe that great fitness is achieved from the inside out, and should be about more than just looking great in a swimsuit. It is our mission to use the medium of fitness to develop every person who walks through our doors into leaders and achievers who are equipped with all of the tools that they need to go forth and change the world.

900 w. 1st Ave. Unit 170 Denver, CO 80223
(720) 550-6347

Hours of Operation

– All Classes: 5:00 a.m. – 10:00 p.m.
– All Classes: 5:00 a.m. – 10:00 p.m.
W – All Classes 5:00 a.m. – 10:00 p.m.
Th – Al Classes 5:00 a.m. – 10:00 p.m.
Fr – All Classes 5:00 a.m. – 08:00 p.m.
Sat – All Classes 7:00 a.m. – 5:00 p.m.
Su – All Classes 7:00 a.m. – 04:00 p.m.

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