Embrace Your Body & Own Your Power with The 4 Pillars of Health



If you’ve been on and off diets for years, feeling shameful every time you “fall off the wagon” with nutrition & fitness, and feel like every time you open a book on improving your health, it’s full of impossible standards, you’re in the right place.  

With The Core 4, you’ll build your health in a sustainable way using the four pillars of Eat Nourishing Foods, Move with Intention, Recharge Your Energy, and Empower Your Mind. No more white knuckling it day after day with bland diet food and doing exercise you hate.  

In The Core 4, you’ll see NO weight loss talk, no before/after photo business, and no stuff about why you need to get skinnier or get abs. Nope. We don’t roll that way.  

How about finding a more aligned, more sustainable, and more peaceful way to boost your energy, get stronger, and build your confidence? Yes please.  


  • Eat the foods that nourish your unique body
  • Cook delicious meals that balance your energy
  • Move your body with intention
  • Build strength with fun, short workouts for all experience levels
  • Sleep more restfully than you have in years
  • Shift your workflow to get more done...with plenty of energy to spare
  • Reframe self-limiting beliefs
  • Get clarity on what's most important to you


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Steph Gaudreau believes women have a right to feel strong and take up space. She's a Nutritional Therapy Practitioner, USA Weightlifting strength coach, podcaster, and author leading a large community of women that are embracing their bodies and owning their innate power. Steph's a best-selling author and international speaker who's been featured in Self, Outside, ELLE, and Greatist. Cold brew, cats, and Liz Lemon are a few of her favorite things.


"Steph Gaudreau is one of those brave, bright-spot outliers who is revolutionizing the world of health and fitness. By shaking up outdated assumptions and blowing up 'smaller is better' belief systems, she is showing women a new way forward, and helping them reconnect to the bedrock strength that is their birthright."

Pilar Gerasimo

Award-winning health journalist and founding editor, Experience Life Magazine

"In The Core 4, Steph gives you the tools and no-nonsense advice to achieve a healthier and happier mind and body. Packed with worksheets, move-by-move guidance, and nourishing meal plans, this book is a blueprint to winning at life!"

Michelle Tam

New York Times bestselling cookbook author and creator of Nom Nom Paleo  

“Steph Gaudreau is a true leader who teaches women how to be nourished, strong, and empowered in all aspects of their lives. The Core 4 not only inspires you to ditch the outdated stories you have told yourselves about nutrition, fitness, and mindset for decades, but provides a done-for-you action plan to help you put each essential aspect into practice."

Mickey Trescott, NTP

Co-founder of Autoimmune Wellness and author of The Nutrient Dense Kitchen

"Steph takes each of the four pillars and helps you integrate them into your life in a way that is approachable and sustainable. She walks you through each activity like she's sitting right there with you encouraging you every step of the way. By the end of the Core 4, you will have to tools to take up space and really own your inner power."

Julie Jones, ACE CPT, CF-L1

Creator of The Masters Division

“In The Core 4, Steph offers step-by-step, move-by-move guidance to getting stronger, feeling more energetic, and of course, eating the most nourishing and delicious food. This book will change your mind, change your body, and change your life."

Molly Galbraith, Co-Founder of Girls Gone Strong

"Core 4 is not only comprehensive, it’s just real. It touches on making your health personal in a practical and sustainable way. Beginners and more advanced lifters can benefit from the program!"

Tiffany Ima, Personal Trainer

Creator of TiffanyIma.com

"Steph Gaudreau is a true passion-filled leader who influences, inspires and empowers women all over the globe, self included! I am elated for Steph's brand-new book, The Core 4, an approachable, non-dogmatic and powerful resource to help women celebrate their strength, know their worth, embrace their power (and their body) and to take up more space!!! Another incredible creation from one of the most bad-ass women I know – The Core 4 is a MUST for every woman in your life."

Beth Manos-Brickey, RYT, NTP

Creator of Tasty Yummies

"This book is much more than a program, it's a lifestyle! Steph really explains the basics of nutrition with a no-nonsense, tough love approach that is somehow void of any judgment or dogmatic vernacular–no small feat. All the information is then backed up with a structured yet flexible plan to get you crushing your Core 4 lifestyle, including workouts, mindset, and delicious recipes. It's a how-to manual for becoming a badass, strong woman!"

Cristina Curp, NTP

Creator of The Castaway Kitchen and Author of Made Whole 

"Steph Gaudreau is a rare gem in the world of diet and fitness experts. She aims to show you how to get stronger— not smaller—and more importantly, how to love yourself fiercely in the process. The Core 4 doesn’t prey on your insecurities; instead, it builds you up and inspires you to become the most badass version of yourself you can be."  

Maya Shetreat, MD  

Author of The Dirt Cure and Founder and Director of the Terrain Institute

“Steph’s well-rounded, holistic approach cuts through the noise and makes it simple to follow her program! The wealth of resources and knowledge she shares is something everyone needs.”

Alison Marras, NTC

Creator of Food by Mars

"The Core 4 is a message that women of all ages need to hear; that it's okay to take up space and own your power. Steph teaches a very practical and easy to follow method to tap into the power that all women have and learn to step into it. The Core 4 is a method that is sustainable, will create lasting results and help every woman around the globe feel great in the skin that they are in!"

Taylor Kiser, ACE, CPT, PN1

Creator of Food Faith Fitness


For press & publicity inquiries for The Core 4, please contact Bridget.Kinsella@harpercollins.com.