Welcome to FITT-RX

FITT-RX welcomes men and women of all ages, fitness levels, and length of fitness experience. We intend to make our programs a fun, effective alternative to the average gym workout. Check out our list of classes and personal/small group training sessions we have to offer. There is something for everyone!


  • My association with Fitt-Rx began in 2014, when I was walking around the block at about 6:00 am and came across a group running.  I tried to hurry to keep up with the group, and I finally was able to engage in conversation with one of the ladies (Bonnie) Bonnie explained that it was a boot camp thru Fitt-Rx trained by Jill and proceeded to take me to meet Jill.  I signed up the following day and showed up to workout.  At this point, I was out-of shape and hated exercise.  The only exercise I knew and physically able to do was jumping jacks. Jill took the time and patience to teach me how to exercise. With her experience in fitness, I have improved remarkably. She can adjust her exercise program to any level or age group.  Ever since then (going on 7 months now!), I’ve been a regular in Jill’s Fitt-Rx boot camp class at Immanuel Lutheran in Elmhurst, IL. Jill’s passion for health and fitness is contagious-she’s the trainer/coach that every person should have!  She brings years of expertise from her role as a fitness instructor, she‘s always so willing to answer questions or help find a solution.  Her positive sprit and living example of a healthy lifestyle pushed me until I could push myself!  I would like to take this opportunity to recommend Jill from Fitt-Rx who is a professional personal trainer. I’ve recommended her to many of my friends and family and will continue to do so.

    Beatriz S.
    Elmhurst, IL

  • I was out of shape when I started bootcamp. I could not run at all. In a very short time I was able to run a mile (which I’d never done before) and my body was transformed. It’s hard work but Jen makes it enjoyable as each session is different. It doesn’t matter what you fitness level is, beginner to advanced. It is such a great class!! I never dreaded going and was overwhelmed by the results. Jen Knuth is an excellent trainer and I look forward to taking more of her classes.
    -Kelly B


Visit Fleet Feet Elmhurst for all of your workout needs! They offer fantastic running programs as well! http://www.fleetfeetelmhurst.com/

Guys, keep coming in for your Off Season Training workouts! You're right on schedule to hit your 1000 workouts goal! Monday Night Football Party at Pints Elmhurst on September 14th is your reward. Don't forget to grab your $5 off coupons for every 8 workouts you complete.

Katie Kare will be getting busier with school letting out for the summer. We ask that you please register them before arriving to the studio to secure them a spot. In order to register them, you need to create a pseudo account for them. For example, login email could be jill@giorno.com, and then you can set a password. Any questions, please email us at admin@fitt-rx.com


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"At FITT-RX, we are committed to prescribing the best workouts to help you attain your fitness goals."


Available Classes

Boot Camp
Cardio Boxing
Circuit Interval
Dude's Training
Spin | TRX
Rowing Circuit | Zumba
and more!
Learn more about all our classes.


Contact Us

123 North York Road
Elmhurst, IL 60126
phone: 630-415-FITT (3488)
email: commit@fitt-rx.com