Our Instructors


Stephanie Bartels
Stephanie has a B.A. in Telecommunications from Indiana University and an M.A. in Media Management from University of North Carolina. After taking course work through Rehab Connections with Diane Fidler, Stephanie went on to complete a more than 200-hour certification in mat and apparatus through the Core Pilates Teacher Training Program. She works for Core Fitness and Physical Therapy teaching mat classes and training private clients and also teaches Spinning for Beverly Ride On. Stephanie is a Pilates Method Alliance Certified Teacher, and is trained in the Be Activated technique.


Kate Benson, PTA
Having completed professional-level training in ballet technique, Kate’s career took a different direction after college and left her with a void in the realm of movement.  Group exercise quickly became the solution.  Teaching classes first started as a hobby, and over time evolved into a serious career objective. Kate jokes with her students that dance is her “therapy.” That statement contains truth  in the way that jokes so often do; Kate believes that the atmosphere in any group exercise class should be conducive to positive change in a way that lets participants conclude feeling better both physically and mentally. She enjoys taking and teaching a variety of group exercise classes including: aerobics, strength training, kickboxing, zumba, and of course, Pilates. Kate has been certified through AFAA, Zumba, Powder Blue Productions, American Heart Association, and has taught in gyms, churches, and park districts. Most recently Kate was Group Fitness Instructor Employee of the Year at the Moraine Valley Community College FitRec. Kate is a Pilates Method Alliance Certified Teacher, and a certified Physical Therapy Assistant.


IMG_6685Melissa Burke

Melissa has her MBA in Finance and International Business from the University of Notre Dame. After taking course work through Rehab Connections with Diane, Melissa went on to complete a more than 200-hour certification in mat and apparatus through the Core Pilates Teacher Training Program. She is also trained in Thai Yoga massage through Core in Training, as well as the Be Activated technique. She not only works for Core teaching Pilates mat and springboard classes and training private clients, but has taught Spinning for Beverly Ride On for over 10 years. Melissa is married and the mother of two.



Colleen Canna
Colleen has her B.A. in Design from The Harrington Institute of Interior Design.  She has completed a more than 200-hour certification in mat and apparatus through the Core Pilates Teacher Training Program. Colleen is a certified spin instructor with Beverly Ride-On and has trained with Douglas Heel in the Be Activated technique.  She believes just as form and function are the building blocks to good design, the basic Pilates principles are the building blocks to a healthy body.



Cathy O’Donnell Conjar 

Cathy is a Pilates instructor with extensive education through the Core Pilates Teacher Training Program. Her coursework included anatomy and physiology, as well as the Reformer, Split Pedal Chair, mat work and Douglas Heel’s Be Activated technique. She has taught both private and group sessions at CORE since 2007. Cathy is also a Spinning Instructor for Beverly Ride On, which shares studio space with the Evergreen Park facility, and is certified in Barre through the Dailey Method. Cathy is a graduate of Mother McAuley High School on Chicago’s southside, and graduated with a Bachelors of Arts from Arizona State University. She has competed in four marathons, and qualified and ran the Boston Marathon in 1998. Her philosophy towards exercise is to keep challenging yourself, while listening to your body. As a mother of five, she realizes the importance of taking care of yourself both for your mind and your body.


Karen Costello, PT
Karen graduated with a Bachelor of Science Degree in Physical Therapy from the University of Illinois-Health Sciences Center in 1986. Since then her career has taken her to a variety of Physical Therapy settings including; hospital acute care, acute and sub-acute in-patient rehabilitation, out-patient orthopedics and home health care. After taking course work through Rehab Connections with Diane Fidler, Karen went on to complete a 200 plus hour certification course in Pilates mat and apparatus with Diane through the Core Pilates Teacher Training Program. Karen is also a Pilates Method Alliance Certified Pilates Teacher, as well as trained in the Be Activated technique. She has been teaching at Core since the fall of 2006. Karen has always had an interest in wellness and she has a special affection for working with the geriatric population. Karen believes it is never too late to get fit and she enjoys helping people of all ages achieve their wellness goals. Karen recently completed a Pfilates training course, and teaches pelvic floor fitness and rehabilitation through a series of scientifically-based, Pilates-inspired exercises. Besides doing Pilates, she enjoys running and she finished her first marathon at the age of 41.



Diane Fidler, Studio Owner, MPT
Diane has a Master’s degree in Physical Therapy from Mt. St. Mary’s College in Los Angeles and a BS in Exercise Physiology from Purdue University. She has been treating patients with orthopedic conditions, pre/post natal and chronic pain since 1993, and teaching group fitness classes since 1986. She is a 
PMA (Pilates Method Alliance) Certified Teacher and has certifications in Mat and Reformer Pilates, which she uses extensively in patient rehabilitation and personal training. Diane teaches continuing education seminars and lectures nationally to other therapists on the principles of Pilates and its effectiveness in rehabilitation. As a marathon runner, tri-athlete and mother of five, she is able to offer an integrated approach to rehabilitation, performance enhancement and wellness. Diane is also trained in Level I and II Be Activated techniques.

FullSizeRender(2)Jill Lenzen, DPT
Jill graduated from Western Illinois University and obtained her Doctorate in Physical Therapy from Midwestern University in 2004.  She has worked in a variety of settings including outpatient orthopedics and home health care. She has been trained in pelvic floor rehabilitation by the Herman and Wallace Pelvic Rehabilitation Institute. She has been treating pelvic floor conditions for over 8 years. She has participated in a variety of community events over the years in order to raise awareness to about Physical Therapy for various women’s health conditions.



Terri McCabe, Director of Education & Training, Pilates Coordinator

Terri graduated from Eastern Illinois University with a Bachelor’s degree in Journalism in 2003, and from St. Xavier University with a Master’s in Early Childhood Education in 2009. After taking coursework through Rehab Connections, Terri completed a more than 200-hour training in mat and apparatus through the Core Pilates Teacher Training Program, and has been teaching Pilates Mat classes and working with private clients since 2007. As the Director of Education and Training, Terri worked with Diane Fidler to create an extensive training curriculum and program. Terri now teaches the Core Pilates Teacher Training Program, as well as studies, observes, and facilitates discussion about the Pilates Method and how it is incorporated into the mission of Core Fitness and Physical Therapy’s approach to rehab and fitness. Terri is a former collegiate athlete with a variety of experiences working within the health and fitness industry. These experiences include: work as a Physical Therapy Aide; managing an all-women’s health club; and coaching youth soccer. She most enjoys opportunities where she can combine her background in fitness with her passion for education, such as training new instructors, or teaching Pilates classes to children with special needs. Terri is a Pilates Method Alliance Certified Teacher.


Peg Meyer

Peg is an expert coach in the fields of business and sports teams. She is inspired to teach and coach Pilates because her experience has shown her that conquering the fundamentals are key to top performance in athletics and business. The Pilates Method is a means to conquer the fundamentals of strengthening and toning muscles, improve flexibility and balance, and unite body and mind. This is the body conditioning that will prevent injuries, and improve performance and endurance while reducing stress and fatigue. Peg received one of the first women’s volleyball athletic scholarships to Pepperdine University, in Malibu, CA. There she studied Physical Education and Coaching. She was part of a national championship and All-Tournament Team, and has been coaching volleyball since 1975. Peg is a mother of four children and grandmother of one.



Jennifer Moody
Jenny has completed a more than 200-hour certification in Mat and Apparatus through Rehab Connections and the Core Pilates Teacher Training Program.  In addition to teaching Pilates, Jenny is the owner of Beverly Ride on since 2001, as well as a certified Star 3 Maddogg Athletic Spinning instructor, since 1997. Jenny has also completed certification programs in Yoga Fit, Nideta, and is trained in Thai Yoga Massage. She has tried to take the background from all of her certifications and incorporate the most successful program for her clients. Her bigge


Grace Mony, Apprentice
Grace has taken great interest in fitness since her college years. In her early twenties she did weight and step training, as well as ballroom dancing. After moving to Chicago, Grace became part of the Latin dance community, and in 2009, she and her dance partner won first place in Chicagoland for a Salsa competition! In 2012, she met her husband while dancing Argentine Tango, and two years later they were married. In her early thirties her interest shifted towards yoga practice and the Pilates method. Grace became more fond of a quality rather than quantity workout, especially after her daughter was born in the summer of 2016. It was then she decided to enroll in the Pilates Teacher Training Program to deepen her own practice. Grace has almost 10 years of teaching experience as a college instructor. She obtained her Master’s Degree in Teaching from National-Louis University (Chicago, IL) in 2008. Grace is of Lithuanian origin… try pronouncing her real name, Grazina Maldutyte, and you’ll get a Pilates workout for your tongue!