My name is Erin Naatz, and along with my husband Jim, we are the founders of Fitness Revolution Sussex.

Fitness Revolution Sussex was founded back in 2009 when I lost my job in manufacturing.  My passion for fitness drove me to rethink my career path, and led me into a career of personal training.  This quickly evolved into opening Rock’N Body Boot Camps which I started in the basement of our house, running Boot Camp style metabolic workouts 3 times per week.  The popularity of the program forced me to find my own facility, and open additional classes.

The program had evolved and the offering was so much more than your average ‘Boot Camp’, so we changed the name and opened as  Fitness Revolution Sussex on Main Street in Sussex, Wisconsin.  I now surround myself with an incredibly talented staff of coaches, running  Metabolic Group Personal Training Programs 6 Days per week in our 3000 square foot facility. With more than 20 sessions to choose from during the week, this progressive program will fit any busy lifestyle and any fitness level.

We pride our self on the COACHING, the PROGRAMMING and the one on one attention we provide to every client. This is not your typical exercise class! This is Group Personal Training, and with our personalized approach to coaching and systematic approach to the programming, this ultimately provides you with the RESULTS you are looking for and achieving the GOALS you have set for your self.  We are a family at FR Sussex, and you will be treated like family!


Erin Naatz: Co-Owner/ Head Coach / Director of Programming

  • Certified – National Academy of Sports Medicine
  • Certified – TRX Suspension Training
  • Certified – Kettlebell Level 1 – Kettlebell Athletics
  • Metabolic Certificate – BJ Gaddour
  • Metabolic Certificate – American Council On Exercise
  • Certified – CPR/AED 










Amy Tatro: Coach

  • Certified – ISSA – CFT
  • Certified – CPR/AED










caronCaron Addie:  Coach

  • Certified – National Academy of Sports Medicine
  • Certified – CPR/AED



Contact Us


Sussex Plaza Strip Mall
N64 W22622 Main Street
Sussex, WI 83702

Contact us