About Pilates
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German born, Joseph Pilates emigrated to the United States in 1926. He set up shop in New York City, teaching his method of physical fitness, that he coined "Contrology" based on the principles of Breath, Concentration, Centering, Control, Precision and Flow as well as elongation, oppositional forces, uniformity, balance and strengthening. He quickly became the guru of rehabilitation to dancers, and a fitness authority to celebrities and the general public alike.
Spheeris Pilates is proud to continue Joseph's work in primarily what is known as the original classical repertoire. Joe's method has proven to be effective, safe and viable throughout over 90 years of practice by certified and trained professionals all over the world.
"Above all, learn to breathe correctly" - Joseph Pilates
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Welcome!!
About Us
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Our studio is based on the belief that our clients' needs are of the utmost importance. Our exuberant staff of fully certified trainers is committed to meeting those needs. As a result, a high percentage of our business is from repeat customers and referrals from Doctors, PT's, & Chiropractors. Studio owner, Jackie Stoffel, is the pioneer Pilates trainer in Sum​mit county, Colorado, introducing Pilates here in 1997. Spheeris Pilates & Wellness is the culmination of many years of study in various movement modalities.
BIOGRAPHIES
TRA​CY O'CONNELL
Tracy has lived and worked in Summit County for over 35 years. Her primary Pilates certification is from Polestar Education, a 2003 graduate. Tracy is also certified in GYROTONIC™and
trained in GYROKINESIS™..
Tracy has over 25 years of fitness and personal training credits. Her dedication and passion for her work at Spheeris is paramount. Tracy teaches group classes Tuesdays and Saturdays as well as Privates and Semi-privates by appointment.
JACKIE STOFFEL (Studio Owner)
I believe the body can heal itself given the right tools, Movement is a gift of healing for body, mind and spirit!"
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Jackie has lived in the area for over 35 years.
Jackie's primary Pilates certification obtained in 1998, is from
The Pilates Center in Boulder, Colorado
Jackie's credentials also include:
- An extensive background in dance performance arts with a BS from CU in Boulder Colorado
- Master of Education from C.S.U. in Fort Collins, Colorado
- GYROTONIC™ Expansion System Certification - 2006
- Certified Independent BEMER distributor - 2016
-IIN Certified Health & Nutrition Coach - 2018
- Certified AMEN Brain Health Coach - 2024
- Functional Movement Training ~ Training in Scoliosis rehabilitation, REIKI II certification
- GYROKINESIS™ training~ Healing Touch and Healing Touch For Animals IV~ The study of Herbal medicine and Therapeutic essential oils.
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Jackie teaches group classes as well as privates and semi-privates by appointment.
MARJORIE BIGGS
Marjorie is an '09 graduate of
​The Pilates Center in Boulder Colorado. She's a Reiki Master and is level V yoga certified. MARJORIE is currently on a training hiatus, finishing her extensive Feldenkrais certification. We look forward to her return in 2026
NORIKO TANI
I came to Summit County from Hanover, NH. I've been teaching Pilates, Skiing, Aquatics, and Spinning since 2013. I'm also a Physical Therapist Assistant since July 2020.
I started practicing Pilates from an article in a newsletter around 2000. There were 10 or so exercises and I did it as a warm-up before my workout. A year or so later, I realized that I had not felt any back pain that had bothered me occasionally since 1988. So, I kept doing them.
Pilates education and certification: STOTT Pilates Level 1 certified instructor for Mat, Reformer, CCB(Cadillac, Chair, and Barrels), Merrithew™ Fascial Movement, and ZENGA®.Taught at River Valley Club in Lebanon, NH and Woodstock Athletics Club in Woodstock, Vermont.
Noriko is currently available for privates and semi-privates by appointment
LILLIAN WETZEL
Lilliian is a native to the Midwest and has been teaching dance and movement for over 14years. Since 2013, she has held a B.F.A. in Dance from Belhaven University and specializes in Ballet, Modern Dance, Contemporary Ballet and Improv. Since 2018, Lillian has been a certified GYROTONIC & GYROKINESIS Trainer. Her focus is keeping functional and attainale holistic health and wellness goals at the forefront of her lessons. Lillian is available for private and duet GYROTONIC sessions by appointment only. She holds Group GYROKINESIS classes on Mondays and Thursdays at Noon. The group GYROKINESIS classes are open to any experience level.
STACEY HOLZER
​Stacey acquired Trinity Wellness Studio in October 2010 after a 10yr career in the ski industry with Intrawest. During her corporate career, she completed her 200hr yoga teacher training certification and her 300hr yoga teacher training online in 2020. In 2024, Stacey sold the brick-and-mortar space for Trinity Wellness Studio. The business will continue with teaching at Spheeris, in-home privates and online coaching. In 2012, she received her Pilates certification from the Physical Mind Institute in Mat and Apparatus levels I-III. Her training has continued with a certification as a Prenatal Yoga Therapist. In 2014, her daughter, Zoe, was born who has continued to inspire and contribute to Trinity as an aspiring yogi and Pilates instructor. In 2019 she completed her certification as a Health and Wellness Coach. She completed her certification for C.A.R.E (Center for Aromatherapy Research & Education) and became a certified teacher in both Vita Flex and the Raindrop Technique in 2020. Stacey is currently working on an advanced Health and Wellness Coaching program as well as continuing her education of Pilates. Stacey will be teaching the Monday, 12:30 Reformer Fundamentals class, the 9AM Circulates/Pilates Equipment Mix class, as well as privates and semi-privates by appointment. ​
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HEATHER STEVENS
​Heather came to us in the summer of 2022, with a resume the size of Texas and a smile to match. She currently teaches the 4:30 classes Tuesday and Thursday, and Classical Reformer II/III Friday at 9 am. She teaches privates and semi-privates by appointment.
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"Motion is Lotion! That is my motto. Fitness is a lifestyle for me, not a hobby or a job, it’s a way of life! I started teaching Fitness Classes out of high school. I was inspired by an aerobics instructor at my gym. She mentored me and started me on my path to fitness. In college I discovered that there was actually a degree for fitness enthusiasts like me and changed my major to Exercise and Sports Science at Colorado State University. I shared my passion for fitness with many vacationers’ on-board Norwegian Cruise Lines for a few years teaching classes and leading fitness excursions. I spent time in Los Angeles and San Francisco where I fell in love with Pilates and became certified in the Classical Method of Pilates at the Pilates Institute of Southern California. Still wanting more, I enrolled in the Master’s Program at the Pilates Center in Boulder, Colorado. After a few years of teaching, I developed my own Teacher Training Program and have certified a number of students into the wonderful world of being a Pilates Teacher. I now spend my time teaching classes and training between Denver, Breckenridge and Kauai. I’m excited to meet you on this journey of fitness"