Substack
The Mentorship
Equipping coaches to transform their clients'
Equipping coaches to transform their clients'
body image and
relationship with food
Most coaches are playing by old rules to improve health—prescribing macros, creating fat loss content, sharing protein tips—but our coaches are trained on what actually moves the needle: building a healthy body image and relationship with food.
Specialized Training for Health Coaches
~75%
of individuals aged 16-25 experience body image distress
>80%
of people gain back half the weight they lost in 5 years
125
how many billions of dollars the health and fitness industry is worth
Therapists have it. Dietitians have it. All of them spend years under supervised practice when they begin working with clients. But coaches? They complete a certification, read some books, and are thrown out into the wild to figure it out alone.
Until now.
The Test Kitchen provides supervised practice for coaching looking to build expertise in body image and eating psychology. This is the work that separates coaches from practitioners.
Successful clients = successful businesses
Every helping profession gets supervision... except coaching.
The Test Kitchen changes that.
A 5-month mentorship for nutrition and health professionals ready to build their expertise in body image and normal eating so that their clients make health behavior changes that last.
Look Inside
The Coaching Test Kitchen
Our Signature Offer
The question that drives everything I do: how can the wellness industry be worth trillions, people be stuck dieting for decades, and we all come out the worse for wear?
My take: we’ve gotten really good at creating repeat customers, but not successful ones.
Meet Your Mentor
I'm Sarah, the
eldest daughter of the coaching industry
I'm Sarah Tierney,
the eldest daughter of the coaching industry
About Us
Trusted by
Michelle Carroll, PhD (c)
Body Image Researcher
Everything is literally before and after Marguerite for me.
"Sarah is a behavior change research oracle."
Karin Nordin, PhD
Behavior Change Expert
Everything is literally before and after Marguerite for me.
"There's nobody that's doing what Sarah is doing with body image and nutrition."
Kasey Orvidas, PhD
Mindset Expert
Everything is literally before and after Marguerite for me.
"Sarah should run the country."
Alyssa Olenick, PhD
Women's Fitness Expert
Everything is literally before and after Marguerite for me.
"Anywhere I can, I point women and coaches to Sarah's work on body image."
