ABOUT
MT Fitness opened its doors in 2020 with one goal—create a space where performance meets community. After years of training clients in traditional gyms, founder and head trainer Maggie Twardowski saw a need for something different: a local studio built on grit, connection, and results. MT Fitness was born to bring people of all fitness levels together in a supportive, high-energy environment that’s as fun as it is effective. Our approach blends tough love with proven training methods to push past limits and unlock potential. Since day one, we’ve been committed to helping every client get stronger, feel more confident, and level up—inside and out.
MEET THE SQUAD
MAGGIE TWARDOWSKI
OWNER & HEAD TRAINER
Maggie is a lifelong sports and fitness enthusiast from St. Louis. After years of training clients in other gyms, she founded MT Fitness in 2020 when she recognized the need for a more supportive, fun, and personalized local fitness studio.
Maggie earned a degree in Kinesiology from Texas Christian University and holds personal training certifications through American Council on Exercise (ACE) and National Strength and Conditioning Association (NSCA). She is also certified as a Weight Management Specialist (ACE) and Fitness Nutrition Specialist (ACE).
During her time as a trainer, Maggie has conducted more than 10,000 training sessions with clients across all age ranges and fitness levels. Expect a healthy dose of Tough Love during Maggie's one-of-a-kind, dynamic workouts.
BETTY SPITZFADEN
PERSONAL TRAINER
GROUP FITNESS INSTRUCTOR
Betty has always been athletic, but when she became a mom, she realized the importance of incorporating strength training into her daily life. She became a avid participant in group fitness classes, enjoying the sense of community they offered.
After years of working out at various studios, Betty fell in love with MT Fitness and decided to become a fitness instructor herself. She holds a group fitness certification through the American Council of Exercise (ACE).
Betty is passionate about supporting those that are new to the fitness world, and pushes all of her clients to challenge themselves, love their bodies, and achieve their personal best.
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NIKKI FINKENTHAL
PERSONAL TRAINER
REGISTERED DIETICIAN
GROUP FITNESS INSTRUCTOR
Nikki is no stranger to an active lifestyle. Growing up as a competitive dancer and lacrosse player, she fell in love with all things health and fitness at a young age. Originally from Cleveland, Ohio, she earned her Bachelor of Science in Nutrition and Kinesiology from Miami University.
In 2017, Nikki became a registered dietician and earned a Master's Degree in Multidisciplinary Health. She later moved to St. Louis where she began teaching group fitness classes and personal training. In 2021, Nikki opened Better Balance, a consulting practice that provides individualized health and nutrition support.
Through her creative programming, Nikki inspires MT Fitness clients to reach their fitness goals and be their healthiest selves.
JULIE O'TOOLE
GROUP FITNESS INSTRUCTOR
Julie was born and raised in St. Louis. She started running during her college days in California, which soon led to marathons and races. Her enthusiasm for running helped to fuel her lifelong passion for all things mind, body, and spiritual wellness.
Following years of weight training intermittently, Julie decided to make it a lifetime commitment after she began training with Maggie at MT Fitness. Before long, she decided to take her fitness journey to the next level and became a certified group fitness instructor through American Council of Exercise (ACE).
Julie was born to help others feel their very best. Her positive energy is contagious and she will be your biggest cheerleader and wellness advocate!
OLIVIA SAUER
GROUP FITNESS INSTRUCTOR
Born and raised in St. Louis, Olivia began playing sports at a young age and always loved being active. With time, that passion for fitness never faded and she eventually earned her group fitness certification through the American Council of Exercise (ACE).
Having been an original member at MT Fitness since its opening in 2020, Olivia eventually decided to partake in TLC classes from behind the microphone.
Classes with Olivia are always unique, effective, and fun! She is eager to help clients discover their peak fitness potential and encourage them to achieve more than they ever thought possible.