about us

We focus on providing one-on-one support in our small group classes. we Want you to feel comfortable in our studio—a place where everyone belongs.

our studio philosophy

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instructor

Molly Castillo

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instructor

Hannah O’Connor

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master instructor

wendy thomas

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instructor

amelia Toporsh

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instructor

Marissa Ziefle

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Studio Owner/ Master Instructor 

jaime hayden

our team

Email jaime at flyingsquirrelpilates@gmail.com for current employment opportunities

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Once Jaime experienced what it was like to feel good - to truly live an active life and not feel damaged - she became determined to harness that positive energy and help others achieve it as well. In her words, "If each exercise is like a piece of a puzzle, I'm driven to help my clients fit them all together to realize the full expression of Pilates. I want my clients to feel good, both in mind and in body, and to experience how it feels for their bodies to work they were made to. After all, our bodies should carry us through life. We shouldn't carry our bodies."

In 2019, Jaime's passion for Pilates led her to achieve a position on the faculty with Rebel Pilates Collective. Now she brings her contagious laugh and witty, yet nurturing personality to both practitioners of Pilates, as well as those aspiring to become certified in a practice that changes lives.

Just as Joseph Pilates said, "Every moment of our lives can be the beginning of great things." So it's no wonder that a difficult moment in Jaime's life was the start of a deep love for a great thing.

An athlete at heart and a native Texan, Jaime grew up playing a wide range of sports, from softball to gymnastics to lacrosse. Her interest in the science behind proper body movement and alignment led her to earn a degree in Kinesiology from the University of Houston. When a torn ACL required her to take a step back from the activities she loved, she moved to Milwaukee, Wisconsin to be closer to family. It was here that she discovered her love for Pilates, and her inner athletic fire was reignited and continues burning strong.

Pilates gave her that same sense of prowess that sports like gymnastics once gave her, but importantly, she could move her body in the absence of pain. Jaime obtained the Synergy Pilates Certification, Freedom Method Pilates Certification, and then realized her dream of opening her own studio. Flying Squirrel Pilates continues to be recognized as the best Pilates Studio in Milwaukee since 2013.

jaime hayden

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Marissa teaches small group classes, duos, and private sessions. She is eager to teach and guide newcomers or those with pilates experience! She is available for bookings weekdays and can be reached by email at mvziefle@gmail.com. Follow her on Instagram @PilatesWithMarissa to stay in the loop about class times and openings! 

Born and raised in Green Bay, Wisconsin, Marissa moved to Milwaukee to attend UW-Milwaukee and discovered the wonderful practice of Pilates. She started taking classes with Jaime at Flying Squirrel Pilates years ago and never looked back. It was the first workout class that stuck and made her feel connected to her body. When the opportunity arose to train to become an instructor, she jumped at the chance.

She is classically trained through Rebel Pilates Collective, formally Pure Body Teacher Training. Marissa began teaching in 2021 and loves being a part of the Flying Squirrel family! Her favorite part about being a pilates instructor is creating a bond with clients and watching them learn and grow over time. 

Marissa Ziefle

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Toporsh resides with her family in Milwaukee’s Historic Third Ward - and when she’s not found in her community, she’s traveling and enjoying being a student of life. Toporsh loves working with women in the Pilates studio, and specializes in middle age, rehabilitation, pregnant and postnatal clients, and anyone looking to move their body. Check out more about her work via her website or social media.

Amelia Toporsh is a 30-something wifey and mom of two, health and wellness business owner, mental health advocate, and self-improvement enthusiast. Toporsh's own journey with mental health and body image distortion led her to explore different tools & healing practices, laying the foundation for 'Her Health & Healing’.Her Health & Healing focuses on empowering & helping women and marginalized communities feel their very best, most aligned selves. The company utilizes and weaves together various modalities like Breathwork, Pilates and movement, mindfulness, coaching and more.

amelia Toporsh

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Her goals are to gently assist those she works with to access their deepest breathing and stabilizing muscles for movement with optimal alignment, so they can leave each session feeling longer, stronger and free to do what they do best. Wendy believes improving the quality of your mind/body connections results in feeling confident in your own skin, to play and live life fully.



Wendy is a Prince-loving Minnesota native who danced her way to New Jersey to attend Mason Gross School of the Arts at Rutgers University, earning a Bachelor of Fine Arts in Dance with honors and prizes for both performance and choreography. Through dance, she found the magic and rewards of Pilates.

After her first session with a Reformer in 2004, she went on to become a STOTT Pilates Certified Instructor and NASM Certified Personal Trainer. She then earned the Pilates Method Alliance certification and  bridged her education to become a Balanced Body Pilates Faculty Instructor Trainer. She regularly attends movement workshops, proving she is constantly interested in learning new tools for guiding bodies of any capacity to their fullest potential.

wendy thomas

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She has taught everything from private, group, up to collegiate level athletics at Marquette University, including golf, tennis, and track & field. Outside of the studio, her passions include her plump grey cat named Harvey & her boyfriend, Alex, as well as vintage collecting, painting, cooking, and exploring the East Side. 

Hannah is celebrating 6 years at Flying Squirrel teaching Mat Pilates with a mix of classical and fusion components. She was trained in Chicago under the Illinois School for Pilates and Movement Education in tandem with the Pilates Method Alliance (PMA) in mat specialization. 

Hannah O’Connor

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Additionally, she has spent the last 5 years teaching Pilates and is continuing her pursuit of helping others by continuing her certification with Peak Pilates. Molly and her husband have two young sons and a 100lb Tibetan Mastiff. They live in Elm Grove and enjoy traveling and spending summers in Okoboji, Iowa.

Molly Castillo has been a fitness instructor since 2015. She holds a B.A.in Theatre with an emphasis in Dance and Musical Theatre from the University of Nevada-Las Vegas. After having spent time on the east coast performing professionally, she recognized her passion for teaching others. While living in Chicago, Molly pursued this passion by teaching barre and Zumba after the birth of her first child in 2015. Most recently, she has furthered her instruction by working in Des Moines and now, Milwaukee. 

Molly Castillo