Theresa Shay

TriYoga Teacher Profile: Theresa Shay

Theresa is the Founding Director of TriYoga of Central Pennsylvania and a senior TriYoga® teacher who introduced the practice to Central Pennsylvania in 2000. She has taught yoga since 1996 in the U.S., India and Venezuela and has studied closely with TriYoga founder Kali Ray for over 20 years. Formally trained with a Master's degree in Education, she works directly with students and trains others to teach TriYoga. Her passion for TriYoga and loving presence invite others into an awareness that brings a fuller flow to life.

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Jill Buchanan

TriYoga Teacher Profile: Jill Buchanan


Jill is a founding member of TriYoga of Central Pennsylvania, having been a weekly student since the first class ever taught in the area in 2000. Jill joined the teaching effort in 2006 and was a member of the board of directors when non-profit status was established. A women's-health nurse practitioner with a current emphasis on HypnoBirthing, Jill believes in a wellness approach that connects body, mind and spirit. On the mat, Jill works with a wide range of students, honoring each individual and their needs. She is certified to teach Basics through Level 2, and finds great joy in offering classes and events to support women through pregnancy and parenthood. She and her husband Scot Paterson live in East Penns Valley, where they raised their three children.

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Mary Klingensmith

TriYoga Teacher Profile: Mary Klingensmith

A retired educator with more than 35 years of teaching experience, Mary continues to fulfill her love for the classroom by teaching TriYoga to students and groups in Mifflin and Centre counties. Mary embodies the benefits of the practice, crediting TriYoga for the start of her new, healthier life. She is a regular presence at TriYoga Teachers Trainings in Central Pennsylvania and received her Level One certification through TriYoga Santa Cruz. When she isn’t teaching or studying TriYoga, you can find her connecting with her family, decorating the studios or keeping TYCP flowing in her role as Assistant to the Director.

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Mairi Sim

TriYoga Teacher Profile: Mairi Sim

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Mairi Sim received her TriYoga Basics Certification in May 2013 and served as a TriYoga of Central Pennsylvania teacher before taking a break. She returned to the TriYoga teaching team early in 2018 to offer Chair Yoga, bringing well-being to a new group of students and expanding the practice beyond the traditional image of yoga on a mat. A Centre County transplant from Glasgow, on the West Coast of Scotland, she found TriYoga exactly 6 months after landing in State College and never looked back. Mairi’s personal journey with TriYoga continues in Therapeutics, where she finds the right amount of movement for her body and mind. She is a firm believer that every body can do yoga.

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TriYoga Interns

TriYoga Teacher Profile: TriYoga Interns

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Linda Ruth Mantz

TriYoga Teacher Profile: Linda Ruth Mantz

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A firm believer in a dynamic “retirement” with a balance of activity and contemplation, Linda Ruth is building a lifestyle with TriYoga. She received her Prana Vidya certification in 2018 and is currently an intern in Basics Teacher Training.

Born and raised in New Jersey, Linda Ruth moved here to raise a family and pursue a career in education. She is a former faculty member of Penn State’s College of Health and Human Development and a certified addiction and recovery specialist.

An instrumental volunteer in the opening of TriYoga Bellefonte, Linda Ruth is teaching a meditation classes on Sunday afternoons, and co-teaching a Basics class with Theresa on Thursday afternoons.

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Kami McWilliams

TriYoga Teacher Profile: Kami McWilliams

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TriYoga found Kami in 2011.  On a whim, she attended a Basics class in her hometown of Howard, PA.  She fell madly in love with Yoga’s discipline and structure. Never thinking herself an athlete, she first became captivated by the changes in her physical ability.  Next came the challenge and ongoing commitment of quieting the mind. She is excited to take others on this journey and share with them all that she has learned. She truly believes Yoga transcends all stereotypes.   

Yoga exemplifies the principles Kami lives by: holistic healing, honoring Mother Earth, seeking knowledge in all things, centering of oneself, and always, always forward progress.

Kami currently co-teaches the Thursday 5:50 pm Basics class in Bellefonte.

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The TriYoga Team