Meet Your Synergy
Training Team

Dr. Birgit Reher
Owner/Physical Therapist


The most rewarding thing about what I do is helping women feel healthier and stronger, move better, and get back to doing the things they enjoy.

Many times, being a physical therapist means playing a detective. Clients frequently come in with problems that have developed from compensating for other underlying issues, such as old injuries. It’s my job to figure out the root of the problem.

I love experiencing with my client that moment of insight where she becomes aware and fully understands why her body is having an issue, and that I can help her fix it, as well as give her tools to help herself. That brings me so much joy, even after 20 years of practice.

As an undergraduate, I received a Bachelor’s in Nursing. After working as an RN for several years, I completed graduate studies to become a physical therapist at Dalhousie University in Halifax, Nova Scotia and later received a Doctorate in Physical Therapy from the University of Montana. I have worked in settings ranging from outpatient orthopedics to home health, geriatrics, and aquatics, and love working on resolving pain, restoring mobility, and improving balance.

When not working at Synergy, I enjoy hiking and backpacking, camping (including Prius camping), reading, gardening, cheering my husband on at soccer games, and having fun with my grandkids.

Katharina Reher
Owner/Operator


I love helping women I serve have "aha" moments concerning their health and wellness. After almost a decade in the health and wellness industry, I've discovered that many people consider only one part of the body and forget about the interconnectedness of the body as a whole. This thought process is something to contemplate when focusing on activity, or intake, or even gimmicky fad diets! It's incredibly rewarding to help make a concept "click" when I provide clarity and insight for clients.

My background includes a Bachelor of Science in Biology from North Carolina Central University and a personal training certificate from the National Academy of Sports Medicine. I have over seven years of personal training experience and 9 years of fitness management.

When I’m at home, I love spending time with my furry family! I have four cats: Felix, Pipey Piperton, Gilberto, and Bootsie Badass. I also trap and rescue feral kitties - to date, I successfully rescued over 50! Other than that, I love acrylic painting, playing drums, and eating baked goods.

Hannah Shankle
Personal Trainer


I am passionate about fitness because people underestimate how pleasant life in their body can be, especially women who have been conditioned to hate how they look and feel every day. It is a hard place to get out of on your own. I’m here to help!
You should know is that I’m an ACE Certified Personal Trainer and certified in CPR, AED, and First Aid.
What I love are festivals. I’m a big “festie” and always looking for and planning for the next music festival. I love EDM and soft electric music. Hippie Sabotage is my favorite artist.

Laura Santiago
Personal Trainer


My biggest passion is to help people take care of their whole self through health and wellness as well as fitness! Nothing makes me happier than helping people change their lives through a healthy lifestyle and a workout routine that fits best to their goals and their lifestyle. My philosophy is that we need to find fitness activities that we enjoy so then we can feel the full benefits of exercise both physically and mentally. I love to make classes challenging but fun and I love building a connection with every client that walks through the door!

I have a Bachelor’s degree in exercise science from High Point University with a concentration in health and wellness. I am a NASM certified personal trainer as well as a certified group fitness trainer through AFAA. In addition to my bachelor's degree and my certifications I also have a Master's degree in Integrative Wellness coaching from Creighton University .

When not working at the studio, you can find me spending time with my family, my boyfriend, and working on my own health and fitness goals. I enjoy spending time outside, whether that is relaxing by the pool or playing tennis and being active. Even though I love spending time outside, you can also find me relaxing at home watching TV or reading a good self-help book.

Lindsey Harrigan, MS, RD, LDN
Registered Dietitian


Lindsey is a Registered Dietitian who specializes in nutrition assessment and education, performance nutrition, disordered eating/eating disorders, lipid disorders, Type 2 Diabetes and PCOS. She earned her Bachelors of Science in Dietetics from the University of Wisconsin - Stevens Point and completed both her Dietetic Internship and Masters in Dietetics at Loyola University Chicago. Lindsey then went on to spend 13 years as the dietitian at Loyola University Chicago's student wellness center. She also provided performance nutrition for Loyola's NCAA Division I athletic teams during her time there. Lindsey and her family relocated to Durham, North Carolina in 2019 where she now also works in campus health at UNC-Chapel Hill.

Practicing a non-diet approach, Lindsey believes ALL foods should have a place in your life, free of guilt or shame. She utilizes motivational interviewing and realistic behavior modifications to help clients achieve their health and fitness goals. Additionally, Lindsey spends time helping clients recognize the impact of diet culture in their lives and working to improve their relationship with food to feel strong and confident in their bodies..

Lindsey spends time staying up to date on current nutrition research and trends through various continuing education opportunities, specifically the Sports, Cardiovascular and Wellness Nutrition Conferences and the International Association of Eating Disorders Professionals Foundation. Lindsey also places an emphasis on continuing to expand her cultural competence to improve her nutrition services to clients from all backgrounds.

Lindsey feels that movement and exercise should be fun and enjoyable and stays active with walking, running, strength training, and yoga. Additionally, she and her husband stay active with their young sons and enjoy taking advantage of the beautiful North Carolina outdoors, exploring new hiking trails regularly.

"Health isn't about what you're eating. It's about what you're thinking, feeling and saying to yourself." - Unknown

TaHaveen Williams
Assistant Manager


I love to make a difference in people's lives. Getting the people around me to smile and feel good about themselves bring me great joy. I believe that our bodies are a unique one-of-a-kind masterpiece, something to be grateful for. Working with women at Synergy allows me to share this belief and bring other women to this understanding and mindset about themselves. It's a privilege. I see every ne day as an opportunity to design new goals and better my mindset.
I am a graduate of NCCU with a degree in kinesiology and a minor in sports medicine.
When not at Synergy, you'll find me outside alone or with family. You will no doubt see me active, always moving. I enjoy begin outdoors.

Valerie Williams
Personal Trainer


Women are caregivers. We look after everyone else before ourselves. What I know to be true is we cannot be everything we need to be for others if we've not first cared for ourselves. Taking care of our bodies is an excellent place to start. What I like to say ... Girls, to rule the world, you have to take care of yourselves! I love helping others. I love helping and working with women especially. I have a background in cheer/gymnastics and have coached both since high school. My experience has allowed me to train individuals from 3-years old to 40 and beyond. My goals include a Bachelor's degree someday. What most don't know about me is that I'm a mother. When I'm not at Synergy, you might find me in an open field tumbling or trying to find a body of water to relax near. If not in one of those places, I'm shopping with my daughter, retail is our therapy.

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