About Us

FIT/ology is locally owned by mother-daughter duo, Sonja and Haelin Steward. Sonja started her very first fitness business back in 2000 to help mom’s get their “before babies” body back because that is what fitness did for her! Haelin grew up in her mother’s gym and grew the same passion for fitness and helping people! She graduated from Mesa University with a Bachelor of Exercise Science Degree with a specialty in Personal Training. They have now teamed up together to create a welcoming boutique fitness space for all fitness levels.

Sonja built her business from the ground up! She knows that God’s purpose for her is to use her spirit and fitness experiences to help others find their FIT! Over the years Sonja and Haelin have helped people find a love for fitness and gain a love for their bodies.

You will very rarely (if ever) repeat a workout at FIT/ology! Our team of instructors have the flexibility to design their own workouts with the clients in mind! This is unlike many other group fitness classes that are choreographed and repeated over and over again. Our team develops workouts that hit 6 areas of physical fitness function including your balance, mobility, coordination, cognitive and emotional responses, muscle strength and cardio fitness. FIT/ology Fitness pushes you to connect your mind with your body to get the best overall results from the workout!!

We so look forward to meeting you!!

Sonja Steward

Co-Owner, Master Trainer

Haelin Steward

Co-Owner, Master Trainer, CTNC

Heidi Castro


Ashley Andrien


Julie Bowers

Sub Instructor

Debi Goldberg

Sub Instructor

Susan Kamberos

Sub Instructor

Laura Walsh

Sub Instructor

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