Regain Strength, Passion & Vitality

Through this 12-week program, specially designed for the transformation of those needing to lose 40-125 lbs.

Come as you are into this safe, encouraging environment and experience the compassion of our supportive trainers who have all lost between 40-160 lbs.

They know what it takes to get back those killer curves, and will be right by your side as you break big challenges down into small, achievable goals.

See how this powerful program has transformed many of our clients’ lives.

Let’s Talk About Your Goals

Inspiring group workouts are just a piece of this program; you will also be strengthened inside and out through engaging discussions on leading a healthy lifestyle. Learn great nutrition tips, discover a lively balance for yourself and your family, and create a powerfully positive mindset that will affect not only you, but will have an incredible impact on those around you.

Ready to get started? Click the button below to sign up to speak with one of our team members, discover your health, fitness and wellness goals, and see if Killer Kurves is a good fit for you!

Meet Your Killer Kurves Trainers

Founded and Trained by

Liz Grosspietsch

Liz Grosspietsch

Head Trainer

● ACE Certified Personal Trainer
● TRX Suspension Certified Trainer
● CPR/AED Certified
Liz graduated from the University of Wisconsin with a degree in Sociology. After working retail management for a few years she had two boys with her husband Chris. When her boys were 1 and 3 she found Dustin’s programs. After finding huge success with Dustin’s Fit Moms classes and loosing 60 pounds Liz decided to pay it forward an became a certified trainer. She now lives her passion of showing others what living a healthy life is all about. Liz hopes that others can find happiness in their lives by taking care of themselves so they can better take care of those around them. When she is not at the gym Liz is busy chasing after her growing boys, enjoying time with friends and family, and volunteering at school. Liz also can be found running, skiing, boating, cooking, and reading. She loves helping people to find balance in their lives by incorporating exercise, healthy eating, and overall wellness. Liz reaches the Killer Kurves program on the East side and also at the Transformation Center.
Trained by

Heidi Duerk

Heidi Duerk


Trained by

Brent Berger

Brent Berger


Brent got a new lease on life and discovered a passion for health and fitness when he lost more than 40 pounds. He's excited to share the lessons he learned on his journey, while himself learning from each Killer Kurves client who walks through our doors.

What To Expect


  • 3 Killer Kurves group workout sessions a week
  • Unlimited membership to Transformation Center


  • Strong community support and encouragement
  • Opportunity to discuss and overcome emotional eating
  • Group events & outings


  • Guided nutrition
  • Inspiring recipes
  • Goal setting


  • Mon/Wed/Fri 5:30-6:30 AM 
  • Tues/Thurs/Fri 5:30-6:30 AM
  • Tues/Thurs 9:20 AM and Sat 8:30 or 9:30 AM
  • Mon/Wed 6:30-7:30 PM and Sat 8:30 or 9:30 AM
  • Tues/Thurs 6:30-7:30 PM and Sat 8:30 or 9:30 AM
Let's Talk About Killer KurvesLet's Talk About Killer Kurves

What Our Clients Are Saying