Our Team

Brook Notary
2nd Generation Teacher

Heather Arnett
Expert Teacher

Danielle ‘Dani’ Hendricks
Expert Teacher

Fernanda Repsold
Expert Teacher

Jack Grantham
Expert Teacher

Jeni Jesse
Expert Teacher

Lise Prewitt
Expert Teacher

Shana Morrison
Expert Teacher

Sharon Gallagher-Rivera (Owner)
Expert Teacher

Mika Street (Sub)
Expert Teacher

Courtney Butowski
Certified Teacher

Ilana Murphy
Certified Teacher

Danielle Williams
Apprentice Teacher

Kym Jaros
Apprentice Teacher

Mariette Lapiz
Apprentice Teacher

Tedra (TAY-dra) Matthews
Certified Teacher

Jayne Reichert
Apprentice Teacher

Brook Notary, 2nd Generation Teachers

My favorite Pilates exercise is: Back extension exercises are key. So much of life is forward. Our spines love us so much after extension work. So cheers to the Breaststroke, and to all exercises that open our hearts for that matter.

The exercise I would like to spend more time working on: Breaststroke on the Reformer–I have suchha love/hate relationship with it. I love how I feel after it, but I am humbled every time I do it.

When I’m not in the Pilates studio, I am running my own private Pilates business out of my small cottage in Mill Valley. My daughter and I moved here from NYC during the pandemic. Being able to teach all my longtime NYC clients on Zoom allowed us the shift to be closer to family and nature. So in our spare time we are discovering all sorts of hikes and places to take our dog, Diogi. We are also enjoying the small things like being able to park our car at the grocery store and wearing a light sweater in winter time. 🙂

Brook Notary is one of NYC’s most renowned instructors, specializing in the Pilates Method. She has had the privilege of teaching Pilates for the past 18 years. Certified by celebrity teacher Rael Isacowitz with continued training from master teacher Kathy Grant, Brook can share knowledge she has gained from the best.

As a professional choreographer, aerialist, dancer, and athlete, Brook understands the body, it’s abilities, and it’s limitations from experience. She was a cast member of the hit aerial Off- Broadway show, De La Gurada, was a nationally ranked competitive rhythmic gymnast, toured the US as an acrobat with Cirque, choreographed for high profile music artists such as Usher, and received her MFA on full scholarship at Tisch School of the Arts.

This diverse background informs her nurturing yet “tough love” athletic approach that has created extraordinary results in her clients, many of whom have been with her for over 12 years. Brook’s clients come to her with issues ranging from rehabilitation, weight loss, heart conditions, diabetes, MS, depression, strengthening goals, and overall body maintenance needs. What excites Brook most, is how different every body is. Brook’s clients include everyone from pro athletes and high profile celebrities, to weekend warriors and silver sneakers, making her well versed in every client’s needs. “It is a true joy for me to make discoveries

Danielle ‘Dani’ Hendricks, Expert Teacher

My favorite Pilates exercise is:   Inversions on the Cadillac

The exercise I would like to spend more time working on:  Inversions, since I don’t have a Cadillac at home

When I’m not in the Pilates studio, I’m usually at home teaching remotely or cooking for my family, at the climbing gym, or practicing aerial fabric and lyra in my aerial partner’s garage.

NPCP Certified Pilates Instructor, Danielle Hendricks

has been a lover of movement from birth. A competitive gymnast and dancer raised in Fresno, CA, Hendricks moved to Colorado in 1994, and graduated from CU Boulder with degrees in Kinesiology and Dance in 1999. She completed her comprehensive Pilates Certification Training in 2001, then Pilates Master’s Training in 2011 from The Pilates Center in Boulder, CO. From 2001 to 2003, Danielle toured the States, teaching at Inner Strength in Chicago, Every Body Fitness in Boston, Martha’s Vineyard Pilates Center, The Pilates Center in Boulder, and found her home in early 2003 at Pilates Aligned in Denver, CO with Cara Reeser as a mentor, inspiration, and friend. “Dani” was fortunate to be able to study several times with Reeser’s mentor, and first-generation teacher of Pilates method, Kathleen Stanford Grant. She completed Cara’s “Kathy Grant Heritage Training” in 2014, and is constantly utilizing the brilliant exercises and verbal cues that Grant developed for her own students to better understand the complexities of Mr. Pilates’ “Contrology.”

In addition to her Pilates teaching, Danielle danced professionally from 1999 to 2020 in both modern and aerial dance companies in the Denver/Boulder area; most notably with Evolving Doors Dance, 3rd Law Dance/Theater for 15 years, and with Frequent Flyers for the 20 years. Much of Dani’s teaching is highly influenced and informed by the nuances of dance technique and the rigors of aerial training. In March of 2020, at the beginning of the shutdown, Dani moved from Colorado back to California to create a new life that includes online teaching, step-children, home ownership, pet chickens, rock climbing, an aerial circus group, and other epic adventures. Dani is thankful for the strength and movement awareness she has gained in her personal practice of the Pilates Method, dance, and aerial training, and is eager to share the gift of movement with others.

Fernanda Repsold, Expert Teacher

My favorite Pilates exercise is: Footwork

The exercise I would like to spend more time working on: Head Harness and Toe Corrector exercises

When I’m not in the Pilates studio, I’m spending time with my family and more

A resident of Mill Valley and parent of two, Fernanda joined the Internal Fire Pilates team in 2013.  

Fernanda enjoys working with people from all walks of life and is especially interested in applying Classical Pilates, and other functional movement modalities such as Gyrotonic® and Yoga as a mean of stimulating the body’s natural ability to heal. Her style of teaching fosters a collaborative process of discovery, combining form and function, while always looking to the whole body to create a supple and uniformly developed structure. Fernanda holds a B.A. and minor from the University of California Berkeley, and currently takes pre-med courses to prepare for study towards a Doctor of Physical Therapy degree.


Advanced Pilates Teacher Training

 Pilates Master’sProgram

 Yoga Teacher Training


 GYROTONIC® Level 2 – pre training

 GYROKINESIS® Level 1- pre training

 Specialized Gyrotonic Equipment: Jumping Stretching Board

Heather Arnett, Expert Teacher

My favorite Pilates exercise is: Whichever one I’m doing…No, seriously.

The exercise I would like to spend more time working on: everything on the Ladder Barrel because I love that apparatus and am envious that I don’t have enough space to own one. Grr!

When I’m not in the Pilates studio, I’m either hiking, diving, rafting, running, dancing, singing, cooking OR making performance art about gender based violence.

Heather Arnett (she/they) is a BASI certified Pilates Instructor with an M.S. in Kinesiology from Western Illinois University (’03) who combines Neurokinetic Therapy (NKT) and fascial release with classical Pilates to help people explore and expand their movement potential. Heather is also a Certified Movement Analyst (Integrated Movement Systems ’06), a level one NKT practitioner, and an enthusiastic student of human anatomy with over 120 hours of live dissection at the Institute for Anatomical Research in Colorado Springs, CO. Heather’s weapons of choice are joy and humor.

Jack Grantham, Expert Teacher

My favorite Pilates exercise is: Full Hang on Cadillac

The exercise I would like to spend more time working on: Full Hang on Cadillac

When I’m not in the Pilates studio, I’m enjoying cooking French and African Cuisine

I began training in Martial Arts in 2008, and completed my Brazilian Jiu Jitsu black belt certification through the world renowned Ralph Gracie by 2013. However, in 2010 my martial arts practice came to a halt after I suffered a neck injury that required surgery, which led me to the beginning of my Pilates journey. After three years of a dedicated Pilates practice, I was hooked, and decided to enroll in the Pilates Education Lab Teacher Training program. I’ve now been teaching Pilates since 2014 and the experience has been beyond rewarding. Fitness has always been a positive part of my life and I’ve enjoyed continuously learning more about the body through each movement system I’ve studied. The best part about teaching Pilates is that I love helping my clients learn how to embrace healthier changes in their bodies.

Jeni Jesse, Expert Teacher

My favorite Pilates exercise is: Rowing Series on the Mat or Reformer

The exercise I would like to spend more time working on: Snake/Twist

When I’m not in the Pilates studio, I am either working on my house or yard or outside walking or hiking

Jeni started doing Pilates over 20 years ago in San Francisco and quickly realized how much she enjoyed this body of movement and exercise.  She began studying to teach Pilates in 2008 with Sharon Gallagher and Carol LeMaitre. In 2014 she went on to complete the Advanced Teacher Training Program at The Pilates Center remotely under the guidance of her long-time teachers; Aura Fischbeck, Susanne Staehr and Erika Groff.  She also completed the Kathy Grant Heritage Training under the tutelage of Cara Reeser the same year.  She’s been teaching in San Francisco and Mill Valley, California ever since.  

During the summers she would come to Denver to be near family, spend time enjoying the amazing outdoors with her son and teach at Pilates Aligned. She has just returned to Denver to live after being away for 30 years!  

Jeni is excited to share her love of the Pilates method and the organic and intuitive work of Kathy Grant by helping people on their Pilates journey. Jeni enjoys helping others transform their bodies and creating lasting positive effects in their daily lives.

When not teaching Pilates Jeni is either learning more about the body and mind through movement and courses or hiking the many mountains of Colorado, or possibly just soaking up some time with her son and cat.

Lise Prewitt, Expert Teacher

My favorite Pilates exercise is: Footwork on the Reformer

The exercise I would like to spend more time working on: Anything that opens my chest!

When I’m not in the Pilates studio, I am out hiking and continually exploring health and wellness

Lise Prewitt began taking movement lessons as soon as she could walk. She was introduced to movement imagery and anatomy as a child through Idiokinesis.. This was the beginning of a strong background in understanding the body and for creating a great body awareness. She majored in biology and chemistry while continuing to study and perform modern dance. She was introduced to pilates in 1994 while performing with a dance company, and then in 1996, after injuries from a car accident limited her abilities to dance and perform, she began to learn to teach pilates. She has taught for both Ellie Herman’s and Balanced Body’s pilates teacher training programs. With two decades of pilates teaching she also incorporates the neuromuscular techniques of Vladamir Janda, yoga, Feldenkrais, Franklin Method and her love of athletics and movement. She is a certified MELT Level 1 practitioner and also teaches MELT Hand and Foot techniques. Her teaching is informed through technical understanding of anatomy and biomechanics, her intuitive sense of the body and her keen observation of posture and movement. She enjoys working with people of all fitness levels as well as with people who have neurological conditions and those recovering from injuries.

Shana Morrison, Expert Teacher

My favorite Pilates exercise is: Saw

The exercise I would like to spend more time working on: Open Leg Rocker

When I’m not in the Pilates studio, I’m singing and performing with my band.

After 30 years training in ballet and gymnastics, Shana Morrison began practicing Pilates in 2000 when a knee injury from dance led her to study new methods of strengthening and centering. Surprised and impressed with the results of her practice, Shana pursued teaching Pilates and became certified in the Pilates Method at the Ellie Herman Studios (Author, Pilates for Dummies, Get on the Ball with Pilates, etc.) in 2004. Since then she has taught private apparatus sessions, duets, and classes in Marin County, San Francisco, and Silicon Valley. To expand upon her education in body movement and functionality, Shana has attended Gyrotonic, Gyrokenesis, and Franklin Method training workshops, and in 2011 completed certification as a personal trainer She enjoys sharing her knowledge of classical pilates method with students of all levels of ability, raw beginner to seasoned pro, and encourages Pilates skills in all movement pursuits.

Sharon Gallagher-Rivera (Owner), Expert Teacher

My favorite Pilates exercise is: Currently a tie between Side Lying Leg Spring Series and Backbends on the Ladder Barrel

The exercise I would like to spend more time working on: Big Splits (Grand Ecarte) on the Reformer

When I’m not in the Pilates studio, I’m Momming and Dancing

Sharon Gallagher-Rivera is the Owner of Internal Fire Pilates and is also Co-Owner of Pilates Education Lab, a training program for aspiring Pilates teachers in San Francisco and Marin. Sharon is a seasoned instructor, and bodywork and rehabilitation specialist committed to enhancing the well-being and resilience of her clients across all physical states and abilities.

Sharon earned her BA in Politics and Performing Arts from USF in 1992, and then spent decades performing, both commercially and with contemporary dance companies including Printz Dance Project for many years. Initially trained by Ellie Herman, she began teaching Pilates in 1999 and has taught at various studios in San Francisco and Marin, including Sanchez Street Studios, owned by Carol LeMaitre (now her teaching partner and co creator of Pilates Education Lab).

Sharon has been blessed to learn from many talented teachers over the years. Aside from years of study with Jennifter Stacey, M.S., she earned a Master’s Certificate with the renowned Pilates Center of Boulder. Sharon enriches her Pilates practice with continued movement study through a regular Pilates practice and dance training in many styles including Modern/Contemporary, West African and Brazilian. Her students are her greatest teachers and she continues to gain experience through teaching with a range of methods. Aside from Pilates, these include: bodywork and massage techniques learned from her studies with Stephen Coleman, L.Ac., (blending the work of Lauren Berry, Swedish Massage, Rolfing and Feldenkrais), Jayne Edwards (Neuromuscular Rehabilitation work of Vladimir Janda, M.D.), Sue Hitzman (creator of the M.E.L.T. method) and Jean Claude-West.

After Lululemon Athletica selected her as a Global Ambassador for 2010-11, she was honored to be selected by PilatesAnytime.com as their “Next Pilates Anytime Instructor 2012”, winning a feature story in Pilates Style magazine. Sharon is a NPCT Certified instructor and has modeled for Ellie Herman’s books, ‘Pilates for Dummies’ and ‘Pilates Wunda Chair’ as well as Ellie’s DVD of Advanced Matwork. She appears in Jordan Matter’s book, ‘Dancer’s Among Us’ as well as Lois Greenfield’s ‘Moving Still’.

Mika Street (Sub), Expert Teacher

My favorite Pilates exercise is: Front Splits and Side Sit-Ups on the Barrel (I could not narrow it to just one)

The exercise I would like to spend more time working on: All of them

When I’m not in the Pilates studio, I’m with my family and enjoying Marin’s beauty

Voted one of NYC’s “Pilates Gurus” by Well and Good http://wellandgood.com/2013/02/13/new-york-citys-pilates-gurus/#new-york-citys-pila tes-gurus-10, Mika brings 13 years of experience with her to Internal Fire. A recent transplant from NYC where she owned and operated 3 Pilates studios – Uptown Pilates, Uptown Pilates on Madison and Uptown Pilates Sag Harbor, Mika and her husband have recently moved to Marin and could not be more excited to be here!

Mika is a firm believer in Joseph Pilates’ method and its universal benefits. She loves sharing her passion for the method and having her clients connect to the precision and flow of each movement.

Courtney Butowski, Certified Teacher

My favorite Pilates exercise is: The Ab 5 Series

The exercise I would like to spend more time working on: anything on the Cadillac

When I’m not in the Pilates studio, I’m on the sidelines of a soccer field

Courtney is a multi-sport athlete (with a special love of soccer) who began Pilates to keep fit in her early 20s. She decided to become a Pilates instructor after assisting (really insisting of) her husband in recovery from a torn Achilles tendon via an active Pilates routine. Thus, she decided to enroll in the Pilates Education Lab Teacher Training program at Internal Fire and learn from the absolute best in the business (Sharon Gallagher-Rivera). Courtney has now been teaching Pilates since 2016 and has found it rewarding beyond measure, especially when she gets to teach it to her two young sons, both of whom are soccer

fanatics. Fitness has always been a positive part of her life and she continues to enjoy teaching others about body mechanics and how to be present in one’s own body and inspire it to healing and wholeness.

Ilana Murphy, Certified Teacher

Ilana Murphy,Certified Teacher

My favorite Pilates exercise is: So many favorites to choose from! I always love Big Twist.

The exercise I would like to spend more time working on:  All the split variations on the Reformer. And most of the exercises that involve going upside down.

When I’m not in the Pilates studio, I’m outside moving in nature.

“Ilana has enjoyed teaching and exploring Pilates for over a decade. She first discovered this approach to informed movement via physical therapy following a car accident. She soon realized the many benefits it offers, including a fun weekly workout, balanced strength, and support for participating in life’s other activities with grace and resilience.  

Ilana was certified by Pilates Education Lab and Ellie Herman Studios and does ongoing continuing education, most recently with The Pilates Workshop, S.F. (a satellite studio of The Pilates Center, Boulder). Ilana has also been a yoga instructor for 20 years and is currently training in the MELT method. She is certified by Balanced Body to teach their Anatomy in 3-D curriculum. 

In addition to teaching Pilates, Ilana is a licensed acupuncturist, herbalist, bodyworker, and practitioner of Functional/Integrative Medicine. Learn more about her practice here: ebbflowhealth.com

Danielle Williams, Apprentice Teacher

My favorite Pilates exercise is: Teaser–on the mat, on the Reformer, Tower, Wunda Chair, everywhere

The exercise I would like to spend more time working on: Going up Front balance on the Wunda Chair

When I’m not in the Pilates studio, I’m on or near the water with Johnny and our dog Coco, studying Zen art,  and working on my Pilates mat practice.

Bio: Danielle Williams was introduced to Pilates in 2000, when her then-boyfriend and now life partner was just completing his Pilates Teacher Training program. It was love right from the start—of the boyfriend and of Pilates. Her love for Pilates became even stronger when she met Sharon Gallagher-Rivera and experienced the transformative power of the Pilates Method in a deeper way than she ever had before. Danielle began her comprehensive teacher training in early 2020 with the Pilates Education Lab, under the direction of Sharon and Carol LeMaitre.

Kym Jaros, Apprentice Teacher

My favorite Pilates exercise is: anything on the Cadillac/Tower

The exercise I would like to spend more time working on: Teaser on all apparatus and mat

When I’m not in the Pilates studio, I’m hiking with my dog, Harley

Kym was introduced to Pilates in 2006 after a fall that resulted in cervical surgery. Her Neurosurgeon recommended Pilates for Rehab to help her with mobility issues. Spinal surgery forever changed her life, however, Pilates gave her the confidence and support to rediscover movement and to approach life in a new way post-surgery.

In March 2020, Kym began studying her full comprehensive classical training under Sharon Gallagher- Rivera. Since then, she has taught private apparatus sessions, duets, and classes in Marin County.

Kym is a dedicated teacher who tailors each session based on the individual’s needs. Her goal is for her clients to walk away from the session learning something new about Pilates and feeling a positive change in their body from the movement.

Kym enjoys sharing her knowledge of classical Pilates method with students of all levels, and can’t wait to share it with you!

Mariette Lapiz, Apprentice Teacher

My favorite Pilates exercise is: Parakeet

The exercise I would like to spend more time working on: Backbend

When I’m not in the Pilates studio, I’m spending time with my husband and two dogs, hiking, sailing, and kayaking.

A passionate student of Pilates since 2012, Mariette decided to pursue teaching by joining the Pilates Education Lab Teacher Training in 2017. Mariette has always been a fitness enthusiast and enjoys many forms of exercise. She spent several years training in power and Olympic lifting and the Russian Kettlebell method. She now spends most of her time focusing on her Pilates practice. For her, Pilates awakens the connection of mind and body, keeps the body healthy, and aids in preventing and healing injury.

Mariette has experienced the many benefits of Pilates and wants to share them with others.

Tedra Matthews, Certified Teacher

Tedra (TAY-dra) Matthews, Certified Teacher

My favorite Pilates exercise is: Russian Splits on the Reformer (all of the splits, really) By that time in a workout I am so warm and mobilized I feel like I could do anything.

The exercise I would like to spend more time working on: Corkscrew, or any twisting exercises. My body is not perfectly symmetrical (is yours?!) so I love to go ever deeper into twists to repattern old habits and tensions.

When I’m not in the Pilates studio, I’m doing all kinds of things! I teach educators across the Bay Area as they pursue continuous improvement in their classrooms. I can be seen gazing, slackjaw with wonder, at my two sons as they bloom in their adolescent adventure. We love to dance, listen to music, and read. I’m obsessed with movement and anatomy, so I’m always seeking new ways of supporting wholeness, integration, and health in the body, mind and spirit.

Tedra has been a mover and teacher of movement for decades. She started her training with the San Francisco Ballet School and graduated from UC Berkeley with a degree in Dance (and a degree in Rhetoric… go figure). Her dance career ended with an injury and since then she has explored yoga, somatic experiencing, Feldenkrais and
Continuum Movement and the Gyrotonic method to name a few. She pursued a career in education and has spent 20 years working in classrooms and at the University level with teachers and lifelong learners.

Tedra found the Classical Pilates Method through Erika Groff’s studio, The Pilates Workshop, in San Francisco and achieved her certification at The Pilates Center in Boulder studying with Amy Alpers and Rachel Seigel-Taylor (both students of Romana Kryzanowska). She continues to hone her practice with daily classes and ongoing
private lessons with expert teachers across the country including Blossom Leilani Crawford, Cara Reeser, and more.

In her teaching practice, Tedra offers an encouraging and intuitive approach to her classes and privates. She can skillfully address imbalances and patterns in movement to release more ease and efficient strength in her clients. She is committed to her clients’ health and well being, and particularly loves working with people who want the
“Return to Life” through Pilates.

Jayne Reichert, Apprentice Teacher

My favorite Pilates exercise is: Hmm. this is a shocker, swan on the ladder barrel and horseback on the chair

The exercise I would like to spend more time working on: Seems like a “loaded” question:-).  but my nemesis the stomach massage, absolutely have to create pants that don’t slide and well in reality every day movement is different, sometimes you have access and sometimes you don’t.

When I’m not in the Pilates studio, Either in behind the stove at a clients, walking the aisles of  our local farmer’s market falling in love with what the seasons have to offer; in my kitchen playing, creating new plant based yumminess or perhaps hosting a cooking class.  If you can’t find me there, head to the beach I’ll be hiking with my dog or look for me on my paddle board in the bay.

Jayne has spent the last 25 years either behind the stove in a professional kitchen, at the farmer’s market shopping, catering someone’s life celebration or standing in front of a roomful of people, teaching them how to cook. It’s been an amazing journey! Last year as a birthday present to herself, she took the year off and headed south of the boarder to surf, cook, eat and hit the “reset” button. That time was very reflective and filled with thoughts about what to do next. Whatever it was, she needed to be as passionate about it as she was about cooking and teaching. Working out and being physically fit has always been very important to her and the idea of being a personal trainer crossed her mind once or twice, but there was something missing in that. It didn’t feel as engaging to her. Her first Pilates class was at least 22 years ago at Club One in the Fillmore. She still remembers how absolutely electrifying it was, literally from the top of her head all the way down through the tips of her toes. It was intoxicating, but at the time not very realistic for a culinary student. Fast forward 20 years, a career spent on her feet and a minor surfing accident (the board went one way and her knee went another) and well guess where she ended up, yep in Pilates. She originally turned to Pilates as a way to rehabilitate her knee without surgery or loss of time at work and it was very effective. So, as she sat on that beach in Mexico and toyed with ideas about what to do next, the idea of Pilates and training to become an instructor kept returning to her. The idea of not just movement but the whole mind body breath connection and the concept of returning to movement or rather finding freedom in movement by connecting all the parts. It is definitely a humbling experience, as your weaknesses are identified very quickly and there’s nowhere to hide. It’s challenging. That challenge energizes and inspires her and that is what she’d like to share and pass on to others as she continues on this journey to fine tune her own practice.

Mariette has experienced the many benefits of Pilates and wants to share them with others.

Admin Staff
Danielle Williams – Director of Happiness
Gracie Scarborough – Girl Boss in Training
Kym Jaros – Master of Sales and Fun
Sharon Gallagher-Rivera – Owner and Ring Leader
Tracy Zhou – Keeper of Order and Calm