3510 Plainfield Ave NE, Grand Rapids, MI 49525  (616) 915-1691
***June 15, 2018 is the last day of classes at FitnessXT – Grand Rapids***
***We have enjoyed serving the Grand Rapids community for 10+ years***
***We apologize for any inconvenience***

FitnessXT classes are high-energy, challenging and fun! Our signature full-body approach is designed to improve strength, burn fat and deliver lasting results in just 30 – 45 minutes per day. At FitnessXT you get more than just a membership. We simplify fitness and nutrition so you can keep up with your busy life and still achieve the body you desire.

Classes offered in:

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Class Schedule: Grand Rapids


4:45pm CrossTraining
5:30pm Piloxing


6:30am CrossTraining

5:30pm Bootie Blast


9:00am Kettlebell CrossTraining**

4:45pm CrossTraining

5:30pm Kettlebell GS Sport WOD^^

^^WOD: members independently completing a posted Kettlebell Workout Of the Day

**Kettlebell CrossTraining requires completion of one Intro to Kettlebells Workshop




5:30pm CSI:45 or


6:30am CSI:45
9:00am Kettlebell CrossTraining**


8:00am Instructor’s Choice
9:15am CrossTraining
9:15am Kettlebell GS Sport



Join today! No enrollment fees.

Upgrade to Unlimited or Add More Classes.

Class Descriptions

(Class offerings and schedules vary by location)
CrossTraining. Our signature full body approach to fitness. Designed to challenge you while building strength using dumbbells, boxes, barbells, ropes, Kettlebells, body-weight exercises and more. HIIT style training at it’s best!
Piloxing ®. A fast-paced class that combines the cardio elements and agility of boxing with the strength training and toning of Pilates. Piloxing ® will improve your cardio endurance, balance and core strength, while torching over 600 calories per class.
Bootie Blast. Build a better “Bootie” in this specialized class designed to tighten, tone and improve your rear-view! Incorporating movements targeting your gluten and hamstrings using body weight exercises, weights, bands and more. Blast fat while you raise your heart rate, improve strength and finally get that tight behind you desire.
BootCamp. High-energy, fun and challenging workouts designed to burn fat, tone and strengthen your entire body. BootCamp incorporates cardio, strength and agility training. This fast-paced class is scalable for every ability level.
CSI:45. Cardio-Strenght-Intervals. Increase fat loss and build strength and endurance with high intensity intervals of cardio alternating with traditional strength training. Everything you need in one 45 minute session.
Kettlebell CrossTraining. Kettlebell based CrossTraining, typically set to a Tabata theme (20 seconds of work followed by 10 seconds of rest). Incorporating other methods and equipment for a full-body workout. To better serve all of our members, Intro to Kettlebells is required before attending any of our Kettlebell CrossTraining classes. Intro to Kettlebells is offered on special dates or by appointment. See below for more details.
Kettlebell GS Sport. Learn to excel in the traditional Kettlebell style and timed competition lifts. Fitnessxt Kettlebell team members compete at local, national and international events setting world records and claiming top placements. This class teaches proper form and technique to beginners and advanced Kettlebell athletes. Contact us to register in advance and schedule an introductory session (recommended for those new to Kettlebell training).
Intro to Kettlebells. Kettlebells build strength and endurance and complement any training program. Learn the benefits and fundamentals of the Kettlebell or enhance your Kettlebell skills by attending this workshop. Offered on special dates or by appointment only. To better serve all of our members, Intro to Kettlebell is required before attending any of our Kettlebell CrossTraining classes.
*all classes included in Memberships except specialty classes marked * which have additional fees.
Contact Us
Fitnessxt – Grand Rapids
3510 Plainfield Ave NE
Grand Rapids, MI 49525
(616) 915-1691
Other Locations:
Fitnessxt – Big Rapids
213 N. Michigan Ave.
Big Rapids, MI 49307
(231) 679-0252