Meet the Team


Cory Shafer
Owner
Personal Training
Come experience MDRN Fitness, where Cory, our dedicated owner and personal trainer, will help you reach and surpass your fitness goals. Cory is passionate about fitness as a whole, and he genuinely cares about motivating and encouraging others while working out alongside them. He is also active with kids, coaching, and his community.

Dani Shafer
Owner & Fitness Instructor
Fit Cycle, BeatBoss, Bootcamp, Bounce, TRX Burning Bands, and Cycle N Strength
Owner and instructor, Dani, is passionate about helping others achieve their health and fitness goals and has a lifetime of experience to share. As a former collegiate athlete, she knows the importance of a good training regimen and is eager to help others whether that's while she is teaching or working out by your side.
In her spare time, Dani loves spending time with her family, traveling, being outdoors, or at sporting events.

Brandee Poland
Fitness Instructor
BodyPump
Brandee, a dynamic instructor whose love for BodyPump classes led her to become a certified instructor in 2015 and has been teaching ever since. She loves to motivate and help members reach their goals, and her degree in education lends itself well to her teaching style. Brandee and her husband met in Denver, but moved back to Rapid City in 2021. They spend their spare time outdoors, with family, and doing DIY home projects.

Jacki Stenson
Certified Yoga Instructor
All Level Yoga Classes
Jacki is a Yoga Instructor with 20 years of experience. Combining her love of fitness with her passion for yoga, Jacki has crafted classes that are suitable for all levels - from easy stretching flow designed to build a connection between the body and the mind, to a deeper exploration of self. "Yoga practice is about healing the self through self-discovery and self-acceptance".

Jess Lewis
Fitness Instructor
BeatBoss Cycle
Meet Jess, this certified BeatBoss cycle instructor and black belt in hapkido also works full time as a Radiologist at MH. When she's not in the gym or hospital, Jess lives an active and adventurous life with her husband and dogs. With her passion for both science and fitness, Jess is ready to help you reach your goals.

Kristen Huitema
Fitness Instructor
BeatBoss Cycle and Fit Cycle
Kristin is a BeatBoss Cycle certified instructor with a Bachelor's degree in recreation and started teaching fitness classes in 2018. She is a passionate and motivational instructor who loves helping gym members achieve their fitness goals. Come join us at MDRN Fitness and experience the magic of fitness with Kristin.

Jennifer Langfeldt
Fitness Instructor
Bootcamp, TRX Burning Bands, Fit Cycle, Bounce Class, and Open Gym Strength Class
Jen is a passionate health and fitness coach and certified weight lifting group fitness instructor. With an extensive background in strength training, conditioning, and macro nutrition, Jen is committed to helping you reach your goals with her enthusiasm for the fitness industry. When she's not in the gym, you can find her embracing her adventurous side and enjoying the outdoors with her family and friends.

Jenna Derby
Fitness Instructor
Fit Cycle, Sculpting Pilates Based Classes (Sculpt N Core and Sculpt N Tone), and Bounce Class
Jenna is an experienced class instructor, who has a true passion for fitness. When she's not inspiring others to move and sweat, you can usually find her with her family, enjoying travel, camping, and outdoor activities.

Fran Henderson
Fitness Instructor
Fit Cycle, Bootcamp, Power Strength, and Personal Training
Fran is a certified instructor with two decades of experience. She has a deep passion for helping others reach their fitness goals with her BeatBoss Cycle and strength classes, as well as her one-on-one personal training sessions. Fran says, "The people at Modern Fitness are what keeps me going. They are motivated, fun, and energetic. I've made many great friends here." With her guidance, MDRN Fitness is the perfect place to find support and motivation to achieve your health and wellness goals.

Mandii Beaudin
Certified Yoga Instructor
Power Yoga
Mandii is a certified Yoga instructor - RYT200. When she is not on her mat (or constantly going through choreo in her head), you will find her exploring the hills, searching for the perfect London fog latte, or experimenting with new recipes. Her goal is to help clients create a practice that's sustainable and fulfilling, through yoga combined with strength training, cardio, and breath work. Yoga has completely transformed the way she looks at life and she is so excited to share it with the MDRN family!

"Great classes, great workouts, great people, great community!!!! This gym will ignite your passion for fitness!! 1000% recommend!!"
Andrea Palmer