Welcome to Crater Fitness!

We are formerly True Fitness by Jennifer  but only the name has changed! It’s the same location, same people, same group and individual training.

Let us help you make an impact on your fitness!


How do you want to exercise?

Crater Fitness has adapted to the need for us to remain distanced and continues to offer group fitness classes in a variety of ways. Don't worry, you don't have to limit yourself to just one type of class!

In-Studio Classes

Limited size classes - masks & distancing required


Zoom Classes

Exercise with Jennifer from your home


Outdoor Classes

Walking with a few strength exercises


Personal Training sessions now available!

Jennifer has a few openings for personal training clients. Call 563-419-7018 to claim a spot!

Classes During COVID-19 Restrictions

Like many other places, Crater Fitness is changing how we do business during the pandemic. Our first priority is the safety of our clients and staff. We also know that now, more than ever, we value our health, strength and cardiovascular fitness.

Currently, we are offering in-studio classes with limited class size, outdoor fitness groups and Zoom classes.

Please use the links below to access  April 2021 class scheduleCOVID-19 waiver, and  current class prices You can also review our COVID-19 Code of Conduct

Crater Fitness invites you to train for “real” life! We’ll meet you where you are – at your fitness level, at your comfort level, at your energy level … the door is open!

Our Services

Group Classes

Group classes are the core of what we do at Crater Fitness. We offer a variety of classes that will meet your needs whether you are just beginning your fitness journey or are looking for a challenge.

Personal Training

Personal training is one-on-one training with a certified professional who can guide you through the process of reaching your fitness goals. People at all levels of fitness can benefit from indvidual training.

Sport Enhancement

Sport enhancement training involves general fitness training, as well as specific movements geared to the sport you are pursuing. This type of training is useful for young athletes and adults participating in recreational sports.


See What our Clients Have to Say

I love Jennifer's classes! Jennifer knows when to push you to work harder, lift heavier or when you need to back off or modify. She's always attentive to any issues your body may be having and offers great suggestions so you may still get a good workout in. I've met so many nice people by taking classes two days a week! Get your sweat on!

Denise B.

Jennifer makes sure our class is a good workout, bu it's also FUN!


These exercises test every part of the body. I have improved!  Jennifer is very accommodating to anyone who has special physical issues. 

Ruth C.

Very knowledgeable, great motivator and true inspiration. Believes we are all athletes wherever we may be on our journey. Jennifer is the BEST!!

Jennifer J.

Jennifer is very passionate about fitness and helping her athletes reach their goals! She is a great instructor!


Excellent at working with all ages and fitness levels. Positive approach with all who take her classes. Extremely, extremely knowledgeable about how to take us from our present level of fitness to a better level of fitness.


I love working out with Jennifer. I get a great workout in only a 1/2 hour! many of the exercises we do, I've never seen, and I've been actively working out for a long time. The Saturday classes are great - reasonably priced and you just go when you can. 

Karen H.

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