Lake Oswego, OR

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Welcome to your fitness home

a place where you can breathe, stretch, play, flex, jump, develop, reflect and be accepted for who you are with coaches who understand what you are becoming.

IM=X® Pilates & Fitness offers pilates reinvented, re-choreographed, and reconstructed to include other physical disciplines. IM=X® updates concepts and practices to reflect the newest research on fitness, cardiovascular training and spine stabilization; and thus is truly the next evolution of pilates fitness workouts.

Lake Oswego

436 1st St
Lake Oswego, OR 97034

(503) 908-0024

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IM=X® Personal Advantage

IM=X® Elite Membership: Receive regular sessions with an IM=X® Advanced Trainer plus access to all our signature pilates and fitness classes. Our Elite Membership is the perfect solution for post-rehabilitation, post-natal, or any other physical fitness objectives. Achieve dramatic results quickly with private sessions plus weekly classes.

IM=X® Personal Training Packages: If you are healing back, hip, knee pain or simply want your workouts to be all about your goals and needs, our trainers are eager to provide a hands-on approach. Your trainer will teach you the IM=X® stabilization exercises so that your core is engaged as you perform any move; and help determine your spring loads for optimal success.

Lake Oswego Instructors

Rhonda Webber

Owner/IM=X® Certified Advanced Trainer

Carlin Davis

Manager/IM=X® Certified Super Advanced Trainer

Monica Quarry

IM=X® Certified Advanced Trainer

Sarah Rainey

IM=X® Certified Advanced Trainer

Leslie Maurer

IM=X® Certified Advanced Trainer

Amber Gosney

IM=X® Certified Advanced Trainer

Ciera Wallace

IM=X® Certified Advanced Trainer

Stephanie Paulson

IM=X® Certified Trainer

Kristen Fisher

IM=X® Certified Advanced Trainer

Ani MacKinnon

IM=X® Certified Advanced Trainer

Rhonda Webber

Owner/IM=X® Certified Advanced Trainer

Rhonda Webber is the owner and manager of IM=X® Pilates Lake Oswego along with her husband Mike. Rhonda is a lifelong health and fitness enthusiast and has 40 years experience in customer service and business management, including many years with both Nike and Nordstrom. Rhonda is certified as both an IM=X® Pilates instructor and a Spin Instructor, and has completed both her IM=X® Advanced certification in 2010 and IM=X® Super Advanced certification in 2011. Rhonda and her husband live in West Linn and their 24yr old son lives in Tualatin and they purchased their IM=X® franchise in 2008 after hearing rave reviews from customers and trainers around the country about the IM=X® Pilates franchise system. Rhonda's favorite hobbies include E-biking with her husband, kayaking on the local rivers and an occasional tandem skydive to get her adrenaline thrill!

Carlin Davis

Manager/IM=X® Certified Super Advanced Trainer

Carlin Davis is a Lake Oswego native. She relocated to the Bay Area for college and in 2005 she began her Pilates journey studying a variety of methodologies. When she moved back to Lake Oswego, she immediately searched for a new home base where she became a member of our IMX community in the fall of 2018. She fell in love with the athletic approach and the results-focused workouts here at our studio. Carlin has 2 joyful and energetic children, Finley and Cole, and their dog, River, that keep her busy and active. With her kids finally in school full time Carlin wanted to share her passion for Pilates by becoming an IMX instructor to teach what she loves. As a mom with 2 young kids, Carlin is all too familiar with how little time we take for ourselves; she is committed to making your hour here count. She strives to help people meet their individual fitness goals by providing an enjoyable and efficient full body workout that honors busy schedules. Carlin completed her IM=X Basic certification in Spring of 2022, IM=X Advanced certification in Fall of 2022 and IM=X Super Advanced Spring 2025. Carlin was promoted to the manager position in Winter 2023!

Monica Quarry

IM=X® Certified Advanced Trainer

Monica became an IM=X® Pilates instructor in early 2015 and attended the Advanced certification courses in 2016 and 2018. After being a student at IM=X® Pilates and seeing the benefits of how it personally helped her with overall strength and core stability (more than she ever experienced!) she knew she wanted to pass this training onto others. IM=X Pilates has given her the opportunity to connect with clients and help them reach their individual goals, which she thoroughly enjoys. Monica has years of experience working with all ages and backgrounds: non-athletes, pro-athletes, individuals wanting to cross-train, seniors focused on balance, those focused on injury prevention and rehabilitation, and pre/post-natal women. She credits Pilates with helping her recover from knee surgery, and the exercises continue to be a huge benefit during her pre/ postnatal years. Outside of the studio, there is never a dull moment with her three very active kids, Atticus (5), Leilani (3) & Amira (2). Monica and her husband have embraced the chaos and love exploring new adventures as an active family.

Sarah Rainey

IM=X® Certified Advanced Trainer

Sarah always had an "on again, off again" relationship with fitness, trying everything from Jazzercise, to kick boxing, to hot yoga, to circuit training, to kettle bells. Within a few months time, she would find herself bored of the routine and moving on to something else (often taking far too long to find that "something else"!). In the Summer of 2013, she found IM=X® Pilates and has never looked back! She immediately noticed a difference in her overall strength, flexibility, and posture, while aches and pains in her neck, shoulders, back and hip joints began to vanish. It did not take long before she found that she was in the best shape of her life! Wanting to help others experience the same benefits and results of the Xerciser, as well as improve her own understanding of the IM=X® Fundamentals, she pursued her IM=X® Pilates Basic certification in the Spring of 2017 and attended her IM=X Advanced certification course in Sept 2018. Outside of the IM=X® studio she manages an Integrative Wellness and Natural Beauty store, with an emphasis on complementary and alternative medicine, and natural skincare and beauty products. When she is not working, she loves cooking, reading, and taking the occasional day trip to wine country with her husband, Steve.

Leslie Maurer

IM=X® Certified Advanced Trainer

Leslie has been enjoying the benefits of Pilates for over 20 years. She has found both mat and reformer Pilates have helped balance and sometimes rehabilitate her body that was overworked or injured from running, weight training and tennis. Unfortunately the options for reformer Pilates were often limited to private or semi-private settings. She was thrilled to discover IM=X® shortly after moving to Lake Oswego and has been attending reformer classes 7 days a week since joining the studio in 2016! She is passionate about fitness and the benefits of IM=X® Pilates and wants everyone to know It is the perfect way for all ages to stay strong and flexible. When not working or working out Leslie, a newlywed, enjoys time with her husband Steve and dog Coco. She has a strong design background and has remodeled 5 houses, finishing her LAST one in 2018! In addition to interior design and garment design, she has designed and produced her own jewelry line.

Amber Gosney

IM=X® Certified Advanced Trainer

Amber Gosney, a Texas transplant, decided after 34 years to move to Oregon in search of cooler weather and prettier views. Her husband Oliver and two corgis Myrtle and Sadie accompanied her on the journey, and they have all fallen in love with the PNW. Amber was drawn to IMX Lake Oswego because she wanted to start a regular workout regimen but was intimidated by large, crowded gyms. She started at IMX in July 2019 and now considers the studio her second home. Amber's love of Pilates and the community of wonderful people that she has met along the way sparked her desire to become an IMX instructor. She completed her IM=X Basic certification in early 2022 and IM=X Advanced in Spring 2024 and looks forward to encouraging others to reach their fitness goals.

Ciera Wallace

IM=X® Certified Advanced Trainer

Ciera has been a movement enthusiast for most of her life. Growing up a dancer and an athlete, group fitness was a natural fit. She found barre as a way to pair her ballet background with a fast-paced workout. She has been teaching since 2015, and has taught multiple modalities in Oklahoma, and most recently Denver before moving to Oregon in fall of 2021. She loves connecting with clients and watching them progress throughout their fitness journey. She lives in Portland with her husband and pets and loves spending time outdoors. Ciera enjoys gardening and growing her own food to cultivate a healthy lifestyle. When she is not in the studio, Ciera is working in the PNW where she specializes in Women’s Health.

Stephanie Paulson

IM=X® Certified Trainer

Stephanie has been a fitness and sports enthusiast for as long as she can remember. She fondly remembers the days of rocking Jane Fonda videos in her living room with her leg warmers and ankle weights. Growing up in Lake Oswego, she played competitive sports throughout her high school years. She still plays tennis competitively and thrives in a team environment. Stephanie has two awesome kids. Her son, Jack, is off to college in the fall and her daughter, Julia, is beginning her Junior year at Jesuit High School. Stephanie first started teaching group exercise in her early twenties and was certified through AFAA. She quickly realized the fitness industry was chock full of amazing things to learn and explore. She ended up pursuing and becoming an indoor cycling instructor at Club Sport (now called Bay Club) and is certified through Schwinn indoor cycling. She is also certified and has taught Group Centergy which is a class that incorporates yoga, Pilates, balance and core. During Covid, Stephanie decided it was time to pursue personal training and was certified through NASM. She trains a variety of clients regularly at her home gym and loves helping people reach their fitness goals. Stephanie has always been drawn to Pilates as she believes it’s the “golden ticket” to maintaining a healthy, happy spine as well as an overall balanced body. She immediately loved the energy and community at IM=X Pilates in Lake Oswego and knew this was a place she wanted to be. Stephanie completed her IM=X Basic Reformer certification in Spring of 2023 and is thrilled to be part of the IM=X LO team!

Kristen Fisher

IM=X® Certified Advanced Trainer

Kristen has been involved in fitness activities her whole life. Running helped her deal with the stress of raising 3 kids with very busy schedules. Because of her love of running, she has completed many half and full marathons. She also enjoys tennis, hiking and biking. Kristen has always thought about finding a way to help others become as enthusiastic about fitness as she is. After she took her first IM=X Pilates class in early 2022 she realized she had found the perfect fitness regime to not only strengthen and tone but to help keep her body in optimal shape to avoid injuries. She looks forward to helping others realize their fitness goals which is why she decided to become an instructor at IM=X Pilates in Lake Oswego and completed her IMX Basic reformer certification in the Summer of 2023 and IM=X Advanced certification in Spring 2024.

Ani MacKinnon

IM=X® Certified Advanced Trainer

An Oregonian at heart, Ani moved down the west coast to sunny California before rediscovering her PNW roots in Lake Oswego. After working the front desk at barre studios during college, Ani discovered her love for the fitness community and with a background in dance and cheerleading, she decided to pursue her goal of becoming an instructor. When she’s not in the studio, Ani is exploring all the new Portland restaurants with her husband, taking photos of her two dogfluencers, or doing all things social media for her full-time job as a Social Media Manager for restaurants and hotels. Ani completed her IM=X Basic certification in Spring of 2024 and her IM=X Advanced certification in Spring of 2024, as well!

IM=X® Spring Specials
3 Month Unlimited – $775 / Students $675 Paid in Full
12-month Unlimited Membership – $2,600 Paid in Full

IM=X® Introductory Specials
New Clients Only
One Month Unlimited Trial – $199
Starter Package 5 Classes – $99
Starter Package: 2 Privates/5 Classes – $199

IM=X® Unlimited Semi-Private Memberships
Unlimited Reformer and Cycle/Reformer Combo classes!
12 Month Unlimited – $244/Month | $2,600 Paid in Full
6 Month Unlimited – $264/Month | $1,500 Paid in Full
3 Month Unlimited – $274/Month | $775 Paid in Full
Month to Month Unlimited – $284/Month

IM=X® Limited Semi-Private Memberships
Good for all Reformer and Cycle/Reformer Combo classes!
8 Classes per month / 4-month auto-renewal – $199/Month
6 Classes per month / 4-month auto-renewal – $169/Month
5 Classes per month / 4-month auto-renewal – $149/Month

IM=X® Private Training Packages
Get the attention and results you want!
Single Session – $90
20 Session Package – $1,500
10 Session Package – $800
5 Session Package – $425

IM=X® Duet Training Packages
Train with a friend or family member!
Single Duet Session – $60 per person
10 Session Duet Package – $500 per person
5 Session Duet Package – $275 per person

IM=X® Semi-Private Packages
Single Semi-Private Drop in Class – $38
40 Class Package / 12-month expiration – $1,160
20 Class Package / 6-month expiration – $620
10 Class Package / 3-month expiration – $330

IM=X® Gift Cards Available!

If you are new to Reformer Pilates please sign up for our “Free Introductory Reformer Private” by clicking on the “Get Started” tab at the top of our page so you can feel the IM=X Pilates difference! You will LOVE it! You can also call Rhonda at 503-908-0224 to book over the phone.

Our studio requires everyone to wear sticky grip socks for your safety and we do have grip socks for sale if you need to purchase a pair.

Please wait at least 8 min before the class before entering the studio to allow the previous class to do a thorough cleaning of their reformer and exit the studio. Take shoes off when you enter the studio and place in shoe racks but take all other personal items with you to your basket at your reformer.

Our reformers have been spaced with a minimum of 6-8’ spacing and a max of 13 in a class and we do multiple studio cleanings throughout the day. The IM=X Pilates Reformer workout will be one of the safest workouts you can do since you are on your own machine for the entire class with plenty of room around you.

Stepping the intensity up a notch, IM=X® incorporates cardio and strength-training elements for optimal sculpting success…utilizing pelvic and ribcage stabilization techniques…plyometric jump segments sprinkled throughout the workout which was created by exercise physiologist Elyse McNergney.”

- PilatesStyle Magazine

Here is one equation that will keep you fit! The benefits of an IM=X® workout have been discovered by many pro athletes, including members of the New York Mets …IM=X® offers a cross-conditioning system focusing on muscle efficiency through posture and core endurance. The comprehensive program includes resistance training, plyometrics and innovative formats…IM=X® brings intensity and efficiency to functional-strength and flexibility training.”

- Physical Magazine

I recently found a method of training that uses aspects of pilates but is geared towards the non-dancer…This method is called IM=X® which stands for Integrated Movement Xercize. Based on pilates, IM=X® puts more emphasis on strength…If you do the exercises consistently, with proper form, you will see and feel the difference!”

- Women’s Fitness

Integrated Movement Xercize (IM=X®). It’s loosely based on pilates — a muscle toning and flexibility program –but IM=X® is a formula that packs more of a strength-training punch. IM=X® pioneer Elyse McNergney leads exercisers through a series of toning and stretching moves on a sturdier version of the pilates reformer (The Xercizer) …You’ll gladly groan through the 30-60 minutes of body shaping.”

-Fitness Magazine

I had a fitness epiphany in a class called IM=X®. Created by Elyse McNergney, M.Ed., M.A., IM=X® stands for Integrated Movement Xercize…Each repetition demanded extreme concentration. My legs shook because despite all my training, they didn’t recognize – and couldn’t handle – the new movements…I broke a sweat and was thrilled to feel the lower part of my abs burn…The IM=X® class passed my fitness test: I was sore and sweaty. But, more than that, the next morning my run seemed a little boring in comparison.”

-Shape Magazine

You need strong core muscles, front and back, to keep your spine elongated and healthy says Jeffrey Goldstein, M.D., a spine surgeon at the Hospital for Joint Diseases…so we asked Elyse McNergney, founder of IM=X® to design a back-focused workout exclusively for SELF…In two weeks, you’ll have better posture and more powerful muscles. But don’t stop there! Within four weeks, you’re bound to look great in any bare-back style, because a strong back is a sexy back — and that feels good all over.”

- Self Magazine