Susan Ertl, MSN, Certified RYT 200 Owner/Instructor

Running was Sue’s outlet for decades but the wear and tear on her joints sent her looking for something different. What she found in yoga was much more than a physical workout.  Yoga provided an incredible change in focus along with a calming sense that was so needed in her life and career as a health care administrator.  Her desire to pursue teaching yoga was fueled by her love of learning and the desire to bring this incredible gift to the mind, body and spirit of others. Sue received her teacher training from Perennial Yoga Wisdom Community in Madison, WI and with the opening of Northern Fire Yoga, she hopes to share her passion and knowledge of yoga with others while contributing to the overall health of the of the Mercer community. Sue earned a Bachelor of Science in Nursing from UW Madison and a Master’s in Nursing Administration from Edgewood College.  She and her husband, Mike have two adult children, four grandchildren and enjoy life at their home on Spider Lake in Mercer.


Heidi Eldred, Certified RYT 500 Instructor

Heidi’s favorite things are her family, dogs, teaching yoga and travel.  Her favorite souvenir from her travels is taking a yoga class or training in every town or county she visits. She loves bringing a sense of community to her classes with the hope that her students will leave with a greater sense of confidence and connection with each other. You can expect to sweat a little in Heidi’s classes, but you’ll also practice at a steady pace based on breath building strength and flexibility with alignment always in mind. 

Heidi is a Yoga Alliance RYT 500 with Jason Crandell Yoga and ERYT 200 training at Innerfire Yoga, Madison. She’s taught Vinyasa Flow Yoga since June 2012.


Amanda Easter, Certified RYT 200 Instructor

Discovering yoga transformed Amanda’s health and life drastically.  Amanda Easter is a 200-hour certified yoga teacher and a member of Yoga Alliance with a passion to spread yoga and a holistic way of life to everyone. Connecting mind, body, and spirit allowed Amanda to make significant changes in her own life to achieve her lifelong dreams. As a student you will build strength and confidence during a variety of challenging and relaxing yoga practices including Vinyasa and Gentle Flow, Yin, Restorative, and Children’s yoga. Amanda worked as a school librarian and yoga teacher for kids and adults at North Lakeland School in Manitowish Waters. She now splits her time between her home in Winchester, Wisconsin and a small farm town in Ringwood, Illinois. Amanda teaches at a variety of yoga studios and nonprofit groups like K9s4U animal rescue, MainStay Therapeutic Horse Farm and created Yoga on the Farm with a dear friend raising money for a variety of charities. Amanda will empower you to be mindful of your body’s needs and your heart’s desires.  Whether you’re beginning or continuing your yoga journey, her calm spirit will guide you down your path to true happiness and achieving your own dreams!


Vicky Mumford, BS, RYT 200 (April 2019) Instructor

As a child, Vicky participated in all forms of dance lessons and played soccer throughout her elementary and high school years in Sun Prairie, Wisconsin. Her interest in yoga began several years ago, and her true journey started when she was pregnant with her second daughter. Yoga helped alleviate low back and hip pain and offered just the right amount of gentle movement her body craved during pregnancy. Vicky fell in love with the flow and from there was “born” her daily yoga practice. She received her yoga teacher training from Yama Yoga Studio in Milwaukee Wisconsin. Her passion to offer pregnant woman this wonderful gift and to provide a healthy outlet for children, led Vicky to become certified in prenatal, postnatal, and kids’ yoga.  She hopes to spread the knowledge she has gained and to introduce others to this practice that has transformed her life physically and mentally. Vicky obtained her Bachelor of Science degree from UW Stevens Point with a double major in Biology and Clinical Laboratory Sciences and is employed by the Marshfield Clinic in Minocqua.  She is also currently pursuing her master’s degree.  Vicky is thankful to have met her husband in college because this brought her to the beautiful Northwoods where she can feed her outdoor enthusiasm. She and her husband have a lake home in Winchester where they enjoy life with their two daughters, Josephine and Annabelle.


Breia Tlusty, MA, RYT 200 Instructor

Breia Tlusty, MA, RYT 200

Do you ever wonder where yoga could take you? Explore your amazing personal journey with yoga in Breia’s vinyasa flow with fun music and essential oils tailored to each class theme. Breia completed her yoga teacher training with T. Nolan Yoga and offers a soulful, caring and free spirit that inspires others to feel joy, peace, and acceptance through their own yoga practice. She was born and raised in Minocqua and achieved a Bachelor of Science degree in Psychology from UW Stout and a Master’s in School Counseling from Appalachian State in Boone NC.  Breia spent time in North Carolina and Florida before returning to northern Wisconsin.  Her eight years of experience as a school counselor has given her a deeper understanding of the mind/body connection. Breia’s yoga instruction and guidance encourages others to be curious about their highest level of personal growth. Besides her love of yoga, she is passionate about music, health and wellness, culinary experiences, traveling and being active in nature and spending time with her husband and children.