Meet the Holistic Practitioners at The Sound Sanctuary in Lake Saint Louis, MO

Sandy Grassmuck embarked on a profound spiritual journey following her mother's passing in 1992. This experience sparked her awareness of deeper dimensions to life, fueling her ongoing quest for discovery. In 2006, she began creating annual vision boards, a practice she continues today, harnessing the power of intention to shape her future.

Certified in Feng Shui since 2011, Sandy integrates its principles into her daily life. She is also a Usui/Holy Fire Reiki Master, having started her Reiki journey in 2012. During her thriving career in real estate, where she also served as an industry leader and Alderman, Sandy encountered health challenges due to stress and burnout. Seeking a transformative change, she discovered sound healing—a practice she instantly connected with. This newfound passion led her to professional training in various sound healing modalities, enabling her to share its transformative benefits with others.

Recently, Sandy opened The Sound Sanctuary in Lake St. Louis, a tranquil space overlooking the lake, dedicated to spiritual healing and growth. The sanctuary hosts a variety of events led by local practitioners, fostering collaboration within the healing community. Sandy continues to balance her dual passions—sound healing and real estate—managing both businesses, which are conveniently located side by side. Through her work, she remains committed to helping others find balance, clarity, and healing in their lives.

I came to yoga after years of endurance racing and powerlifting left my body feeling worn down and in need of something gentler. I turned to yoga in search of relief and never expected it to capture my heart the way it did. I signed up for yoga teacher training simply to spend more time on the mat—but I had no idea how much I’d fall in love with guiding others along their own yoga journeys.

Teaching has become one of my greatest passions. I’m committed to helping people discover their potential, move with intention, and realize that anything is possible—no matter where they’re starting from. My classes are rooted in mindful movement, breath, and presence, offering an inclusive space for students of all levels to reconnect with their bodies and build confidence from the inside out.

Off the mat, I’m lucky to share life with my wonderful husband, Reed, and I’m a proud grandma to three incredible grandkids. I’m a (not-so-great) golfer, a devoted dog mom, love to travel and a loyal Survivor fan—though you won’t catch me applying!  I’m also deeply passionate about animal rescue and serve on the board of a giant breed rescue, advocating for dogs who need someone in their corner.

I’m also continuing my yoga education as I work toward my 500-hour certification—driven by a deep desire to keep growing and to show up even more fully for my students.

Sandra Fernandez is a former Registered Dietitian, and current REALTOR®, Real Estate Investor, Certified Reiki Master, and Author.

Sandra’s 25 year background in nutrition and healthcare fuels her passion for natural and holistic and energy healing. She began exploring alternative therapies, including Essential Oils, Light Therapy for Stem Cell activation, and Reiki. In 2022, she became certified in Angelic Reiki followed by Certified Reiki Master designation in 2023. Her clients have reported positive outcomes in various areas, such as skin conditions, stress management, PTSD, grief, ADHD, relaxation, and improved sleep.

Sandra also performs Energy Clearing in people’s homes. That work results in a more peaceful, relaxed and harmonious home and family environment.

Outside of her professional pursuits, Sandra loves hiking and biking on local trails around St. Charles, as well as spending quality time with her family at their favorite beach in Destin, Florida. Her hobbies include reading, gardening, cooking, snow skiing, and visiting local wineries with friends.